Aldryn categories error

traceback.py

ImproperlyConfigured at /de/admin/aldryn_newsblog/article/4/
CategoryMultipleChoiceField should only be used for M2M relations to the aldryn_categories.Category model.

Environment:


Request Method: GET
Request URL: http://server:9090/de/admin/aldryn_newsblog/article/4/

Django Version: 1.6.10
Python Version: 2.7.8
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.sitemaps',
 'djangocms_admin_style',
 'admin_shortcuts',
 'django.contrib.admin',
 'aldryn_boilerplates',
 'cmsplugin_filer_file',
 'cmsplugin_filer_image',
 'cmsplugin_filer_folder',
 'djangocms_text_ckeditor',
 'djangocms_link',
 'djangocms_flash',
 'djangocms_snippet',
 'aldryn_snake',
 'aldryn_style',
 'aldryn_grid_bootstrap',
 'aldryn_video',
 'gunicorn',
 'compressor',
 'south',
 'easy_thumbnails',
 'login_as',
 'standard_form',
 'divio_styleguide',
 'robots',
 'django_commontranslations',
 'taggit',
 'parler',
 'hvad',
 'haystack',
 'spurl',
 'treebeard',
 'cms',
 'mptt',
 'menus',
 'sekizai',
 'filer',
 'siteinfo',
 'reversion',
 'core',
 'aldryn_categories',
 'aldryn_newsblog',
 'aldryn_people',
 'aldryn_events',
 'aldryn_people',
 'aldryn_search',
 'esbintranet.events',
 'esbintranet.news',
 'esbintranet.projects',
 'esbintranet.team',
 'absolute',
 'aldryn_forms',
 'captcha',
 'emailit']
Installed Middleware:
['core.middleware.BasicAuthMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.transaction.TransactionMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'core.middleware.CurrentSiteMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.middleware.http.ConditionalGetMiddleware',
 'cms.middleware.language.LanguageCookieMiddleware',
 'cms.middleware.page.CurrentPageMiddleware',
 'cms.middleware.toolbar.ToolbarMiddleware',
 'cms.middleware.user.CurrentUserMiddleware',
 'siteinfo.middleware.login_required.RequireLoginMiddleware',
 'core.utils.compatibility.XUACompatibleMiddleware']


Template error:
In template /srv/www/www/project/env/local/lib/python2.7/site-packages/django/contrib/admin/templates/admin/includes/fieldset.html, error at line 19
   CategoryMultipleChoiceField should only be used for M2M relations to the aldryn_categories.Category model.
   9 :             {% for field in line %}


   10 :                 <div{% if not line.fields|length_is:'1' %} class="field-box{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}"{% elif field.is_checkbox %} class="checkbox-row"{% endif %}>


   11 :                     {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}


   12 :                     {% if field.is_checkbox %}


   13 :                         {{ field.field }}{{ field.label_tag }}


   14 :                     {% else %}


   15 :                         {{ field.label_tag }}


   16 :                         {% if field.is_readonly %}


   17 :                             <p>{{ field.contents|linebreaksbr }}</p>


   18 :                         {% else %}


   19 :                              {{ field.field }} 


   20 :                         {% endif %}


   21 :                     {% endif %}


   22 :                     {% if field.field.help_text %}


   23 :                         <p class="help">{{ field.field.help_text|safe }}</p>


   24 :                     {% endif %}


   25 :                 </div>


   26 :             {% endfor %}


   27 :         </div>


   28 :     {% endfor %}


   29 : </fieldset>


Traceback:
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  137.                 response = response.render()
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/response.py" in render
  105.             self.content = self.rendered_content
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/response.py" in rendered_content
  82.         content = template.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  140.             return self._render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  123.         return compiled_parent._render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  123.         return compiled_parent._render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  123.         return compiled_parent._render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render
  88.             output = self.filter_expression.resolve(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in resolve
  585.                 obj = self.var.resolve(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in resolve
  735.             value = self._resolve_lookup(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in _resolve_lookup
  789.                             current = current()
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in super
  72.             return mark_safe(self.render(self.context))
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  196.                         nodelist.append(node.render(context))
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  155.         return self.render_template(self.template, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render_template
  137.         output = template.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  140.             return self._render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  196.                         nodelist.append(node.render(context))
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  196.                         nodelist.append(node.render(context))
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  305.                 return nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  305.                 return nodelist.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/base.py" in render
  840.                 bit = self.render_node(node, context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  78.             return node.render(context)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/template/debug.py" in render
  91.             output = force_text(output)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/utils/encoding.py" in force_text
  100.                 s = s.__unicode__()
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/forms/forms.py" in __str__
  425.         return self.as_widget()
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/forms/forms.py" in as_widget
  475.         return widget.render(name, self.value(), attrs=attrs)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/contrib/admin/widgets.py" in render
  254.         output = [self.widget.render(name, value, *args, **kwargs)]
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/forms/widgets.py" in render
  572.         options = self.render_options(choices, value)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/forms/widgets.py" in render_options
  528.         for option_value, option_label in chain(self.choices, choices):
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/forms/models.py" in __iter__
  1049.                 yield self.choice(obj)
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/django/forms/models.py" in choice
  1056.         return (self.field.prepare_value(obj), self.field.label_from_instance(obj))
File "/srv/www/www/project/env/local/lib/python2.7/site-packages/aldryn_categories/fields.py" in label_from_instance
  31.                 "CategoryMultipleChoiceField should only be used for M2M "

Exception Type: ImproperlyConfigured at /de/admin/aldryn_newsblog/article/4/
Exception Value: CategoryMultipleChoiceField should only be used for M2M relations to the aldryn_categories.Category model.