diff --git a/openslides/application/models.py b/openslides/application/models.py
index 4c06b55a6..3a4e901be 100644
--- a/openslides/application/models.py
+++ b/openslides/application/models.py
@@ -264,7 +264,7 @@ class Application(models.Model, SlideMixin):
             ApplicationSupporter(application=self, person=person).save()
             self.writelog(_("Supporter: +%s") % (person))
 
-    def unsupport(self, user):
+    def unsupport(self, person):
         """
         remove a supporter from the list of supporters of the application
         """
@@ -272,11 +272,11 @@ class Application(models.Model, SlideMixin):
             # TODO: Use own Exception
             raise NameError('This application is already permitted.')
         try:
-            object = self.applicationsupporter_set.get(user=user).delete()
+            object = self.applicationsupporter_set.get(person=person).delete()
         except ApplicationSupporter.DoesNotExist:
             pass
         else:
-            self.writelog(_("Supporter: -%s") % (user))
+            self.writelog(_("Supporter: -%s") % (person))
 
     def set_number(self, number=None, user=None):
         """
diff --git a/openslides/application/views.py b/openslides/application/views.py
index f702eb53b..e8a019875 100644
--- a/openslides/application/views.py
+++ b/openslides/application/views.py
@@ -264,7 +264,7 @@ def edit(request, application_id=None):
                 if request.user.has_perm('application.can_manage_application'):
                     messages.warning(request, _("Attention: Do you really want to edit this motion? The supporters will <b>not</b> be removed automatically because you can manage motions. Please check if the supports are valid after your changing!"))
                 else:
-                    messages.warning(request, _("Attention: Do you really want to edit this motion? All <b>%s</b> supporters will be removed! Try to convince the supporters again.") % application.supporter.count() )
+                    messages.warning(request, _("Attention: Do you really want to edit this motion? All <b>%s</b> supporters will be removed! Try to convince the supporters again.") % application.count_supporters() )
             initial = {'title': application.title,
                        'text': application.text,
                        'reason': application.reason}
@@ -372,7 +372,7 @@ def support(request, application_id):
     support an application.
     """
     try:
-        Application.objects.get(pk=application_id).support(user=request.user)
+        Application.objects.get(pk=application_id).support(person=request.user)
         messages.success(request, _("You have support the motion successfully.") )
     except Application.DoesNotExist:
         pass
@@ -386,7 +386,7 @@ def unsupport(request, application_id):
     unsupport an application.
     """
     try:
-        Application.objects.get(pk=application_id).unsupport(user=request.user)
+        Application.objects.get(pk=application_id).unsupport(person=request.user)
         messages.success(request, _("You have unsupport the motion successfully.") )
     except Application.DoesNotExist:
         pass
diff --git a/openslides/assignment/models.py b/openslides/assignment/models.py
index accfc2105..7b7064ef1 100644
--- a/openslides/assignment/models.py
+++ b/openslides/assignment/models.py
@@ -131,9 +131,7 @@ class Assignment(models.Model, SlideMixin):
     def get_participants(self, only_elected=False, only_candidate=False):
         candidates = self.assignment_candidats.exclude(blocked=True)
 
-        if only_elected and only_candidate:
-            # TODO: Use right Exception
-            raise Exception("only_elected and only_candidate can not both be Treu")
+        assert not (only_elected and only_candidate)
 
         if only_elected:
             candidates = candidates.filter(elected=True)
@@ -141,8 +139,11 @@ class Assignment(models.Model, SlideMixin):
         if only_candidate:
             candidates = candidates.filter(elected=False)
 
+        participants = []
         for candidate in candidates.all():
-            yield candidate.person
+            participants.append(candidate.person)
+        return participants
+        #return candidates.values_list('person', flat=True)
 
 
     def set_elected(self, person, value=True):
diff --git a/openslides/assignment/views.py b/openslides/assignment/views.py
index 83b5e04c5..5271750c4 100644
--- a/openslides/assignment/views.py
+++ b/openslides/assignment/views.py
@@ -421,8 +421,8 @@ class AssignmentPDF(PDFView):
             candidate_string = candidate.user.get_full_name()
             if candidate in elected_candidates:
                 candidate_string = "* " + candidate_string
-            if candidate.group:
-                candidate_string += "\n(%s)" % candidate.group
+            if candidate.category:
+                candidate_string += "\n(%s)" % candidate.category
             row.append(candidate_string)
             for vote in poll_list:
                 if vote == None:
@@ -581,8 +581,8 @@ class AssignmentPollPDF(PDFView):
                 candidate = option.candidate
                 cell.append(Paragraph(circle + candidate.user.get_full_name(),
                     stylesheet['Ballot_option_name']))
-                if candidate.group:
-                    cell.append(Paragraph("(%s)" % candidate.group,
+                if candidate.category:
+                    cell.append(Paragraph("(%s)" % candidate.category,
                         stylesheet['Ballot_option_group_right']))
                 else:
                     cell.append(Paragraph("&nbsp;",
diff --git a/openslides/participant/forms.py b/openslides/participant/forms.py
index 4fb13a570..aedff5126 100644
--- a/openslides/participant/forms.py
+++ b/openslides/participant/forms.py
@@ -94,7 +94,7 @@ class GroupForm(forms.ModelForm, CssClassMixin):
 class UsersettingsForm(forms.ModelForm, CssClassMixin):
     class Meta:
         model = User
-        fields = ('username', 'first_name', 'last_name', 'email')
+        fields = ('username', 'first_name', 'last_name', 'email', 'gender')
 
 
 class UserImportForm(forms.Form, CssClassMixin):
diff --git a/openslides/participant/templates/participant/overview.html b/openslides/participant/templates/participant/overview.html
index 3e2762a37..452bdcb53 100644
--- a/openslides/participant/templates/participant/overview.html
+++ b/openslides/participant/templates/participant/overview.html
@@ -65,7 +65,7 @@
         <tr>
             <th><a href="?sort=first_name&reverse={% if 'first_name' in sortfilter.sort and 'reverse' not in sortfilter %}1{% else %}---{%endif%}">{% trans "First Name" %}</a></th>
             <th><a href="?sort=last_name&reverse={% if 'last_name' in sortfilter.sort and 'reverse' not in sortfilter %}1{% else %}---{%endif%}">{% trans "Last Name" %}</a></th>
-            <th><a href="?sort=group&reverse={% if 'category' in sortfilter.sort and 'reverse' not in sortfilter %}1{% else %}---{%endif%}">{% trans "Category" %}</a></th>
+            <th><a href="?sort=category&reverse={% if 'category' in sortfilter.sort and 'reverse' not in sortfilter %}1{% else %}---{%endif%}">{% trans "Category" %}</a></th>
             <th><a href="?sort=type&reverse={% if 'type' in sortfilter.sort and 'reverse' not in sortfilter %}1{% else %}---{%endif%}">{% trans "Type" %}</a></th>
             <th><a href="?sort=committee&reverse={% if 'committee' in sortfilter.sort and 'reverse' not in sortfilter %}1{% else %}---{%endif%}">{% trans "Committee" %}</a></th>
             {% if perms.participant.can_manage_participant %}
diff --git a/openslides/participant/views.py b/openslides/participant/views.py
index a2575d138..f4bbb8448 100644
--- a/openslides/participant/views.py
+++ b/openslides/participant/views.py
@@ -269,7 +269,7 @@ class ParticipantsPasswordsPDF(PDFView):
             cell.append(
                 Paragraph(
                     _("Password: %s")
-                    % (user.firstpassword), stylesheet['Monotype']))
+                    % (user.default_password), stylesheet['Monotype']))
             cell.append(Spacer(0, 0.5 * cm))
             cell.append(
                 Paragraph(
@@ -321,7 +321,7 @@ class UserImportView(FormView):
 
 class ResetPasswordView(RedirectView, SingleObjectMixin, QuestionMixin):
     """
-    Set the Passwort for a user to his firstpassword.
+    Set the Passwort for a user to his default password.
     """
     permission_required = 'participant.can_manage_participant'
     model = User
diff --git a/openslides/poll/models.py b/openslides/poll/models.py
index add325b66..a38514619 100644
--- a/openslides/poll/models.py
+++ b/openslides/poll/models.py
@@ -236,7 +236,7 @@ def print_value(value, percent_base=0):
     elif value == -2:
         return unicode(_('undocumented'))
     elif value is None:
-        return u''
+        return unicode(_('undocumented'))
     if not percent_base:
         return u'%s' % value