diff --git a/CHANGELOG b/CHANGELOG
index 8fe5f6e73..17146e2e6 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -20,7 +20,7 @@ Core:
 - Added support for big assemblies with lots of users.
 - Added HTML support for messages on the projector.
 - Moved custom slides to own app "topics". Renamed it to "Topic".
-- Added support for multiple projectors
+- Added support for multiple projectors.
 
 Motions:
 - Added origin field.
diff --git a/openslides/agenda/static/js/agenda/site.js b/openslides/agenda/static/js/agenda/site.js
index 1b34573a3..7ca0ee866 100644
--- a/openslides/agenda/static/js/agenda/site.js
+++ b/openslides/agenda/static/js/agenda/site.js
@@ -251,7 +251,7 @@ angular.module('OpenSlidesApp.agenda.site', ['OpenSlidesApp.agenda'])
             var isAgendaProjectedId = $scope.isAgendaProjected($scope.mainListTree);
             if (isAgendaProjectedId > 0) {
                 // Deactivate
-                $http.post('/rest/core/projector/' + isAgendaProjectedId + '/prune_elements/', []);
+                $http.post('/rest/core/projector/' + isAgendaProjectedId + '/clear_elements/');
             }
             if (isAgendaProjectedId != projectorId) {
                 $http.post('/rest/core/projector/' + projectorId + '/prune_elements/',
@@ -332,7 +332,7 @@ angular.module('OpenSlidesApp.agenda.site', ['OpenSlidesApp.agenda'])
             if (projectiondefaultItem) {
                 $scope.defaultProjectorItemId = projectiondefaultItem.projector_id;
             }
-            var projectiondefaultListOfSpeakers = ProjectionDefault.filter({name: 'list_of_speakers'})[0];
+            var projectiondefaultListOfSpeakers = ProjectionDefault.filter({name: 'agenda_list_of_speakers'})[0];
             if (projectiondefaultListOfSpeakers) {
                 $scope.defaultProjectorListOfSpeakersId = projectiondefaultListOfSpeakers.projector_id;
             }
@@ -515,16 +515,11 @@ angular.module('OpenSlidesApp.agenda.site', ['OpenSlidesApp.agenda'])
         }, function() {
             $scope.projectors = Projector.getAll();
             $scope.updateCurrentListOfSpeakers();
-        });
-        $scope.$watch(function () {
-            return Projector.lastModified();
-        }, function () {
-            var projectiondefault = ProjectionDefault.filter({name: 'current_list_of_speakers'})[0];
+            var projectiondefault = ProjectionDefault.filter({name: 'agenda_current_list_of_speakers'})[0];
             if (projectiondefault) {
                 $scope.defaultProjectorId = projectiondefault.projector_id;
             }
         });
-
         $scope.updateCurrentListOfSpeakers = function () {
             var itemPromise = CurrentListOfSpeakersItem.getItem($scope.currentListOfSpeakersReference);
             if (itemPromise) {
@@ -539,7 +534,7 @@ angular.module('OpenSlidesApp.agenda.site', ['OpenSlidesApp.agenda'])
             var isCurrentLoSProjectedId = $scope.isCurrentLoSProjected($scope.mainListTree);
             if (isCurrentLoSProjectedId > 0) {
                 // Deactivate
-                $http.post('/rest/core/projector/' + isCurrentLoSProjectedId + '/prune_elements/', []);
+                $http.post('/rest/core/projector/' + isCurrentLoSProjectedId + '/clear_elements/');
             }
             if (isCurrentLoSProjectedId != projectorId) {
                 $http.post('/rest/core/projector/' + projectorId + '/prune_elements/',
diff --git a/openslides/core/migrations/0006_multiprojector.py b/openslides/core/migrations/0006_multiprojector.py
index 592695384..638ceb839 100644
--- a/openslides/core/migrations/0006_multiprojector.py
+++ b/openslides/core/migrations/0006_multiprojector.py
@@ -13,7 +13,7 @@ def name_default_projector(apps, schema_editor):
     Set the name of the default projector to 'Defaultprojector'
     """
     Projector = apps.get_model('core', 'Projector')
-    Projector.objects.filter(pk=1).update(name='Defaultprojector')
+    Projector.objects.filter(pk=1).update(name='Default projector')
 
 
 class Migration(migrations.Migration):
diff --git a/openslides/core/models.py b/openslides/core/models.py
index 77bba0286..953496b42 100644
--- a/openslides/core/models.py
+++ b/openslides/core/models.py
@@ -179,18 +179,19 @@ class Projector(RESTModelMixin, models.Model):
 
 class ProjectionDefault(RESTModelMixin, models.Model):
     """
-    Model for the ProjectionDefaults like Motion, Agenda, List of speakers,...
-    The name is the technical name like 'topics', 'motions'. For apps the name should
-    be the app name to get keep the ProjectionDefault for apps generic. But it is
-    possible to give some special name like 'list_of_speakers'.
-    The display_name is the shown name on the front end for the user.
+    Model for the projection defaults like motions, agenda, list of
+    speakers and thelike. The name is the technical name like 'topics' or
+    'motions'. For apps the name should be the app name to get keep the
+    ProjectionDefault for apps generic. But it is possible to give some
+    special name like 'list_of_speakers'. The display_name is the shown
+    name on the front end for the user.
     """
     name = models.CharField(max_length=256)
 
     display_name = models.CharField(max_length=256)
 
     projector = models.ForeignKey(
-        'Projector',
+        Projector,
         on_delete=models.CASCADE,
         related_name='projectiondefaults')
 
diff --git a/openslides/core/serializers.py b/openslides/core/serializers.py
index aeb0482b7..a3c45dd89 100644
--- a/openslides/core/serializers.py
+++ b/openslides/core/serializers.py
@@ -40,8 +40,8 @@ class ProjectorSerializer(ModelSerializer):
 
     class Meta:
         model = Projector
-        fields = ('id', 'config', 'elements', 'scale', 'scroll', 'name', 'blank', 'width', 'height', 'projectiondefaults')
-        read_only_fields = ('scale', 'scroll', 'blank', 'width', 'height', 'projectiondefaults')
+        fields = ('id', 'config', 'elements', 'scale', 'scroll', 'name', 'blank', 'width', 'height', 'projectiondefaults', )
+        read_only_fields = ('scale', 'scroll', 'blank', 'width', 'height', )
 
 
 class TagSerializer(ModelSerializer):
diff --git a/openslides/core/signals.py b/openslides/core/signals.py
index 7ec363245..92609c323 100644
--- a/openslides/core/signals.py
+++ b/openslides/core/signals.py
@@ -27,18 +27,20 @@ def delete_django_app_permissions(sender, **kwargs):
 def create_builtin_projection_defaults(**kwargs):
     """
     Creates the builtin defaults:
-     - agenda_all_items, agenda_item
+     - agenda_all_items, agenda_list_of_speakers, agenda_current_list_of_speakers
+     - topics
      - assignments
      - mediafiles
      - motion
      - users
-     - list_of_speakers
-     - current_list_of_speakers
-    """
 
-    # Check whether ProjectionDefaults exists
+    These strings have to be used in the controllers where you want to
+    define a projector button. Use the string to get the id of the
+    responsible projector and pass this id to the projector button directive.
+    """
+    # Check whether ProjectionDefault objects exist.
     if ProjectionDefault.objects.all().exists():
-        # Do completely nothing if the defaults are already in the database.
+        # Do completely nothing if some defaults are already in the database.
         return
 
     default_projector = Projector.objects.get(pk=1)
@@ -52,11 +54,11 @@ def create_builtin_projection_defaults(**kwargs):
         display_name='Topics',
         projector=default_projector)
     ProjectionDefault.objects.create(
-        name='list_of_speakers',
+        name='agenda_list_of_speakers',
         display_name='List of speakers',
         projector=default_projector)
     ProjectionDefault.objects.create(
-        name='current_list_of_speakers',
+        name='agenda_current_list_of_speakers',
         display_name='Current list of speakers',
         projector=default_projector)
     ProjectionDefault.objects.create(
diff --git a/openslides/core/static/js/core/base.js b/openslides/core/static/js/core/base.js
index a9c09c88c..0a66870a1 100644
--- a/openslides/core/static/js/core/base.js
+++ b/openslides/core/static/js/core/base.js
@@ -192,10 +192,12 @@ angular.module('OpenSlidesApp.core', [
         autoupdate.onMessage(function(json) {
             // TODO: when MODEL.find() is called after this
             //       a new request is fired. This could be a bug in DS
-            // TODO: If you don't have the permission to see a projector, the
-            //       variable json is a string with an error message. Therefor
-            //       the next line fails.
-            var dataList = JSON.parse(json);
+            var dataList = [];
+            try {
+                 dataList = JSON.parse(json);
+            } catch(err) {
+                console.error(json);
+            }
             _.forEach(dataList, function(data) {
                 console.log("Received object: " + data.collection + ", " + data.id);
                 var instance = DS.get(data.collection, data.id);
@@ -313,15 +315,17 @@ angular.module('OpenSlidesApp.core', [
     }
 ])
 
-// This places a Projectorbutton in the document. Example:
-// <projector-button model="motion" default-projector.id="defPrId" additional-id="2"
-//   content="{{ 'project' | translate }}"></projector-button>
-//
-// This button references to model (in this case 'motion'). Also a defaultProjectionId has to
-// be given. In the Exable its a scope variable. The next two parameters are additional:
-// - additional-id: Then the model.project and model.isProjected will be called whith this
-//                  argument (ex.: model.project(2))
-// - content: A not trusted text placed behind the projector symbol.
+/*
+ * This places a projector button in the document.
+ *
+ * Example: <projector-button model="motion" default-projector.id="defPrId"
+ *           additional-id="2" content="{{ 'project' | translate }}"></projector-button>
+ * This button references to model (in this example 'motion'). Also a defaultProjectionId
+ * has to be given. In the example it's a scope variable. The next two parameters are additional:
+ *   - additional-id: Then the model.project and model.isProjected will be called with
+ *                    this argument (e. g.: model.project(2))
+ *   - content: A text placed behind the projector symbol.
+ */
 .directive('projectorButton', [
     'Projector',
     function (Projector) {
@@ -370,7 +374,7 @@ angular.module('OpenSlidesApp.core', [
             // if this object is already projected on projectorId, delete this element from this projector
             var isProjectedId = this.isProjected();
             if (isProjectedId > 0) {
-                $http.post('/rest/core/projector/' + isProjectedId + '/prune_elements/');
+                $http.post('/rest/core/projector/' + isProjectedId + '/clear_elements/');
             }
             // if it was the same projector before, just delete it but not show again
             if (isProjectedId != projectorId) {
@@ -483,7 +487,7 @@ angular.module('OpenSlidesApp.core', [
                 },
                 getStateForCurrentSlide: function () {
                     var return_dict;
-                    $.each(this.elements, function(key, value) {
+                    angular.forEach(this.elements, function(key, value) {
                         if (value.name == 'agenda/list-of-speakers') {
                             return_dict = {
                                 'state': 'agenda.item.detail',
@@ -592,11 +596,13 @@ angular.module('OpenSlidesApp.core', [
     }
 ])
 
-// This filter filters all items in array. If the filterArray is empty, the array is passed.
-// The filterArray contains numbers of the multiselect: [1, 3, 4].
-// Then, all items in array are passed, if the item_id (get with id_function) matches one of the
-// ids in filterArray. id_function could also return a list of ids. Example:
-// Item 1 has two tags with ids [1, 4]. filterArray = [3, 4] --> match
+/*
+ * This filter filters all items in an array. If the filterArray is empty, the
+ * array is passed. The filterArray contains numbers of the multiselect, e. g. [1, 3, 4].
+ * Then, all items in the array are passed, if the item_id (get with id_function) matches
+ * one of the ids in filterArray. id_function could also return a list of ids. Example:
+ * Item 1 has two tags with ids [1, 4]. filterArray == [3, 4] --> match
+ */
 .filter('SelectMultipleFilter', [
     function () {
         return function (array, filterArray, idFunction) {
diff --git a/openslides/core/static/js/core/projector.js b/openslides/core/static/js/core/projector.js
index c0acd41d2..dbaaed9a3 100644
--- a/openslides/core/static/js/core/projector.js
+++ b/openslides/core/static/js/core/projector.js
@@ -60,10 +60,11 @@ angular.module('OpenSlidesApp.core.projector', ['OpenSlidesApp.core'])
 .controller('ProjectorContainerCtrl', [
     '$scope',
     '$location',
+    'gettext',
     'loadGlobalData',
     'Projector',
     'ProjectorID',
-    function($scope, $location, loadGlobalData, Projector, ProjectorID) {
+    function($scope, $location, gettext, loadGlobalData, Projector, ProjectorID) {
         loadGlobalData();
 
         $scope.projector_id = ProjectorID();
@@ -73,17 +74,15 @@ angular.module('OpenSlidesApp.core.projector', ['OpenSlidesApp.core'])
         $scope.$watch(function () {
             return Projector.lastModified($scope.projector_id);
         }, function () {
-            Projector.find($scope.projector_id).then(function (projector) {
+            var projector = Projector.get($scope.projector_id)
+            if (projector) {
+                $scope.error = '';
                 $scope.projectorWidth = projector.width;
                 $scope.projectorHeight = projector.height;
                 $scope.recalculateIframe();
-            }, function (error) {
-                if (error.status == 404) {
-                    $scope.error = 'Projector not found.';
-                } else if (error.status == 403) {
-                    $scope.error = 'You have to login to see the projector.';
-                }
-            });
+            } else {
+                $scope.error = gettext('Can not open the projector.');
+            }
         });
 
         // recalculate the actual Iframesize and scale
@@ -164,34 +163,31 @@ angular.module('OpenSlidesApp.core.projector', ['OpenSlidesApp.core'])
         $scope.$watch(function () {
             return Config.lastModified('projector_broadcast');
         }, function () {
-            Config.findAll().then(function () {
-                var bc = Config.get('projector_broadcast').value;
-                if ($scope.broadcast != bc) {
-                    $scope.broadcast = bc;
-                    if ($scope.broadcastDeregister) {
-                        // revert to original $scope.projector
-                        $scope.broadcastDeregister();
-                        $scope.broadcastDeregister = null;
-                        setElements($scope.projector);
-                        $scope.blank = $scope.projector.blank;
+            var bc = Config.get('projector_broadcast').value;
+            if ($scope.broadcast != bc) {
+                $scope.broadcast = bc;
+                if ($scope.broadcastDeregister) {
+                    // revert to original $scope.projector
+                    $scope.broadcastDeregister();
+                    $scope.broadcastDeregister = null;
+                    setElements($scope.projector);
+                    $scope.blank = $scope.projector.blank;
+                }
+            }
+            if ($scope.broadcast > 0) {
+                // get elements and blank from broadcast projector
+                $scope.broadcastDeregister = $scope.$watch(function () {
+                    return Projector.lastModified($scope.broadcast);
+                }, function () {
+                    if ($scope.broadcast > 0) {
+                        // var broadcast_projector = Projector.get($scope.broadcast);
+                        Projector.find($scope.broadcast).then(function (broadcast_projector) {
+                            setElements(broadcast_projector);
+                            $scope.blank = broadcast_projector.blank;
+                        });
                     }
-                }
-
-                if ($scope.broadcast > 0) {
-                    // get elements and blank from broadcast projector
-                    $scope.broadcastDeregister = $scope.$watch(function () {
-                        return Projector.lastModified($scope.broadcast);
-                    }, function () {
-                        if ($scope.broadcast > 0) {
-                            // var broadcast_projector = Projector.get($scope.broadcast);
-                            Projector.find($scope.broadcast).then(function (broadcast_projector) {
-                                setElements(broadcast_projector);
-                                $scope.blank = broadcast_projector.blank;
-                            });
-                        }
-                    });
-                }
-            });
+                });
+            }
         });
 
         $scope.$on('$destroy', function() {
diff --git a/openslides/core/static/js/core/site.js b/openslides/core/static/js/core/site.js
index 825cfdaba..beb1694cf 100644
--- a/openslides/core/static/js/core/site.js
+++ b/openslides/core/static/js/core/site.js
@@ -1205,7 +1205,7 @@ angular.module('OpenSlidesApp.core.site', [
             });
         };
 
-        // Get all message and countdown data from the defaultprojector (id=1)    
+        // Get all message and countdown data from the defaultprojector (id=1)
         var rebuildAllElements = function () {
             $scope.countdowns = [];
             $scope.messages = [];
@@ -1246,7 +1246,7 @@ angular.module('OpenSlidesApp.core.site', [
 
             // stop ALL interval timer
             cancelIntervalTimers();
-            
+
             rebuildAllElements();
         });
         $scope.$on('$destroy', function() {
@@ -1424,7 +1424,7 @@ angular.module('OpenSlidesApp.core.site', [
                         $http.post('/rest/core/projector/' + projector.id + '/update_elements/', data);
                     }
                 });
-            }); 
+            });
         };
         $scope.isProjected = function (element) {
             var projectorIds = [];
@@ -1616,7 +1616,7 @@ angular.module('OpenSlidesApp.core.site', [
         };
         $scope.removeIdentifierMessages = function () {
             Projector.getAll().forEach(function (projector) {
-                $.each(projector.elements, function (uuid, value) {
+                angular.forEach(projector.elements, function (uuid, value) {
                     if (value.name == 'core/message' && value.type == 'identify') {
                         $http.post('/rest/core/projector/' + projector.id + '/deactivate_elements/', [uuid]);
                     }
diff --git a/openslides/core/static/templates/core/manage-projectors.html b/openslides/core/static/templates/core/manage-projectors.html
index 508611299..fe115510e 100644
--- a/openslides/core/static/templates/core/manage-projectors.html
+++ b/openslides/core/static/templates/core/manage-projectors.html
@@ -56,7 +56,7 @@
               <li ng-repeat="projectiondefault in projectiondefaults | orderBy:'id'"
                   ng-click="setProjectionDefault(projector, projectiondefault)">
                 <i class="fa fa-check" ng-if="projectiondefault.projector_id === projector.id"></i>
-                <translate>{{ projectiondefault.display_name }}</translate>
+                {{ projectiondefault.display_name | translate }}
               </li>
             </ul>
           </div>
diff --git a/openslides/core/static/templates/projector-button.html b/openslides/core/static/templates/projector-button.html
index e90dec1c3..49415430e 100644
--- a/openslides/core/static/templates/projector-button.html
+++ b/openslides/core/static/templates/projector-button.html
@@ -20,7 +20,7 @@
         ng-class="{ 'projected': (model.isProjected(additionalId) == projector.id) }">
         <i class="fa fa-video-camera" ng-show="model.isProjected(additionalId) == projector.id"></i>
         {{ projector.name }}
-        <span ng-if="defaultProjectorId == projector.id">(<translate>Standard</translate>)</span>
+        <span ng-if="defaultProjectorId == projector.id">(<translate>Default</translate>)</span>
       </a>
     </li>
   </ul>
diff --git a/openslides/core/views.py b/openslides/core/views.py
index 9228b035f..e015f90dd 100644
--- a/openslides/core/views.py
+++ b/openslides/core/views.py
@@ -18,7 +18,6 @@ from django.utils.timezone import now
 
 from openslides import __version__ as version
 from openslides.utils import views as utils_views
-from openslides.utils.autoupdate import inform_changed_data
 from openslides.utils.plugins import (
     get_plugin_description,
     get_plugin_verbose_name,
@@ -190,23 +189,25 @@ class ProjectorViewSet(ModelViewSet):
             result = self.get_access_permissions().check_permissions(self.request.user)
         elif self.action == 'metadata':
             result = self.request.user.has_perm('core.can_see_projector')
-        elif self.action in ('activate_elements', 'prune_elements', 'update_elements',
-                             'deactivate_elements', 'clear_elements', 'control_view',
-                             'set_resolution', 'set_scroll', 'control_blank', 'destroy',
-                             'create', 'update', 'broadcast', 'set_projectiondefault'):
+        elif self.action in (
+            'create', 'update', 'partial_update', 'destroy',
+            'activate_elements', 'prune_elements', 'update_elements', 'deactivate_elements', 'clear_elements',
+            'control_view', 'set_resolution', 'set_scroll', 'control_blank', 'broadcast',
+            'set_projectiondefault',
+        ):
             result = (self.request.user.has_perm('core.can_see_projector') and
                       self.request.user.has_perm('core.can_manage_projector'))
         else:
             result = False
         return result
 
-    # Assign all projectionDefaults from this projector to the default projector (pk=1)
+    # Assign all ProjectionDefault objects from this projector to the default projector (pk=1).
     def destroy(self, *args, **kwargs):
         projector_instance = self.get_object()
-        for a in ProjectionDefault.objects.all():
-            if a.projector.id == projector_instance.id:
-                a.projector = Projector.objects.get(pk=1)
-                a.save()
+        for projection_default in ProjectionDefault.objects.all():
+            if projection_default.projector.id == projector_instance.id:
+                projection_default.projector_id = 1
+                projection_default.save()
         return super(ProjectorViewSet, self).destroy(*args, **kwargs)
 
     @detail_route(methods=['post'])
@@ -486,8 +487,6 @@ class ProjectorViewSet(ModelViewSet):
         """
         if config['projector_broadcast'] == 0:
             config['projector_broadcast'] = pk
-            projector_instance = self.get_object()
-            inform_changed_data(projector_instance)
             message = "Setting projector {id} as broadcast projector was successful.".format(
                 id=pk)
         else:
diff --git a/openslides/mediafiles/static/js/mediafiles/site.js b/openslides/mediafiles/static/js/mediafiles/site.js
index 093fcfbe3..b2d90fad2 100644
--- a/openslides/mediafiles/static/js/mediafiles/site.js
+++ b/openslides/mediafiles/static/js/mediafiles/site.js
@@ -158,7 +158,7 @@ angular.module('OpenSlidesApp.mediafiles.site', ['ngFileUpload', 'OpenSlidesApp.
         $scope.showMediafile = function (projectorId, mediafile) {
             var isProjectedId = mediafile.isProjected();
             if (isProjectedId > 0) {
-                $http.post('/rest/core/projector/' + isProjectedId + '/prune_elements/', []);
+                $http.post('/rest/core/projector/' + isProjectedId + '/clear_elements/');
             }
             if (isProjectedId != projectorId) {
                 var postUrl = '/rest/core/projector/' + projectorId + '/prune_elements/';
@@ -177,15 +177,12 @@ angular.module('OpenSlidesApp.mediafiles.site', ['ngFileUpload', 'OpenSlidesApp.
             }
         };
 
-        // To avoid some kind of 60,000000000001% in template
-        $scope.round = function (val) {return Math.round(val);};
-
         var sendMediafileCommand = function (mediafile, data) {
             var updateData = _.extend({}, mediafile);
             _.extend(updateData, data);
             var postData = {};
             postData[mediafile.uuid] = updateData;
-            
+
             // Find Projector where the mediafile is projected
             $scope.projectors.forEach(function (projector) {
                 if (_.find(projector.elements, function (e) {return e.uuid == mediafile.uuid;})) {
diff --git a/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html b/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html
index 683e5ddb8..b3850dff5 100644
--- a/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html
+++ b/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html
@@ -196,7 +196,7 @@
         <td ng-show="!isDeleteMode"
             os-perms="core.can_manage_projector">
           <div class="btn-group" style="min-width:54px;" uib-dropdown
-            ng-if="mediafile.mediafile.is_presentable"
+            ng-if="mediafile.is_presentable"
             uib-tooltip="{{ 'Projektor' | translate }} {{ mediafile.isProjected() }}"
             tooltip-enable="mediafile.isProjected() > 0">
             <button type="button" class="btn btn-default btn-sm"
diff --git a/openslides/motions/static/js/motions/projector.js b/openslides/motions/static/js/motions/projector.js
index 817ecd351..fa315b458 100644
--- a/openslides/motions/static/js/motions/projector.js
+++ b/openslides/motions/static/js/motions/projector.js
@@ -79,9 +79,7 @@ angular.module('OpenSlidesApp.motions.projector', ['OpenSlidesApp.motions'])
             }
         };
 
-        Motion.find(id).then(function (motion) {
-            $scope.motion = motion;
-        });
+        Motion.bindOne(id, $scope, 'motion');
         User.bindAll({}, $scope, 'users');
 
     }
diff --git a/openslides/motions/static/js/motions/site.js b/openslides/motions/static/js/motions/site.js
index 63737365b..5322c6f7e 100644
--- a/openslides/motions/static/js/motions/site.js
+++ b/openslides/motions/static/js/motions/site.js
@@ -1217,7 +1217,6 @@ angular.module('OpenSlidesApp.motions.site', ['OpenSlidesApp.motions', 'OpenSlid
         $scope.$watch(function () {
             return Projector.lastModified();
         }, function () {
-            console.log(ProjectionDefault.getAll());
             $scope.defaultProjectorId = ProjectionDefault.filter({name: 'motions'})[0].projector_id;
         });
         $scope.version = motion.active_version;
diff --git a/openslides/utils/autoupdate.py b/openslides/utils/autoupdate.py
index 8f35683b6..d3c86bd58 100644
--- a/openslides/utils/autoupdate.py
+++ b/openslides/utils/autoupdate.py
@@ -64,7 +64,7 @@ def ws_add_projector(message, projector_id):
     """
     user = message.user
     # user is the django anonymous user. We have our own.
-    if user.is_anonymous:
+    if user.is_anonymous and config['general_systen_enable_anonymous']:
         user = AnonymousUser()
 
     if not user.has_perm('core.can_see_projector'):
@@ -140,12 +140,9 @@ def send_data(message):
 
     broadcast_id = config['projector_broadcast']
     if broadcast_id > 0:
-        projectors = Projector.objects.all()  # also the broadcasted projector should get data
-        broadcast_projector = Projector.objects.get(pk=broadcast_id)
-
+        projectors = Projector.objects.all()  # Also the broadcasted projector should get his data
         send_all = True
-        # The data from the broadcasted projector
-        broadcast_projector_data = get_projector_element_data(broadcast_projector)
+        broadcast_projector_data = get_projector_element_data(Projector.objects.get(pk=broadcast_id))
     else:
         broadcast_projector_data = None
 
diff --git a/openslides/utils/rest_api.py b/openslides/utils/rest_api.py
index 1e8dc3086..68272cd46 100644
--- a/openslides/utils/rest_api.py
+++ b/openslides/utils/rest_api.py
@@ -14,7 +14,6 @@ from rest_framework.routers import DefaultRouter
 from rest_framework.serializers import ModelSerializer as _ModelSerializer
 from rest_framework.serializers import (  # noqa
     MANY_RELATION_KWARGS,
-    BooleanField,
     CharField,
     DictField,
     Field,
diff --git a/tests/integration/core/test_views.py b/tests/integration/core/test_views.py
index 76ba7684d..2166c9141 100644
--- a/tests/integration/core/test_views.py
+++ b/tests/integration/core/test_views.py
@@ -26,22 +26,12 @@ class ProjectorAPI(TestCase):
 
         response = self.client.get(reverse('projector-detail', args=['1']))
         content = json.loads(response.content.decode())
-        del content['projectiondefaults']
-
         self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(content, {
-            'id': 1,
-            'elements': {
-                'aae4a07b26534cfb9af4232f361dce73':
-                    {'id': topic.id,
-                     'uuid': 'aae4a07b26534cfb9af4232f361dce73',
-                     'name': 'topics/topic'}},
-            'scale': 0,
-            'scroll': 0,
-            'name': 'Defaultprojector',
-            'blank': False,
-            'width': 1024,
-            'height': 768})
+        self.assertEqual(content['elements'], {
+            'aae4a07b26534cfb9af4232f361dce73':
+                {'id': topic.id,
+                 'uuid': 'aae4a07b26534cfb9af4232f361dce73',
+                 'name': 'topics/topic'}})
 
     def test_invalid_slide_on_default_projector(self):
         self.client.login(username='admin', password='admin')