'NoneType' object has no attribute '_base_manager' (django-tagging)

[bittner]

With the Organice v0.3, Django 1.8.8, django-tagging 0.4, when I go into the Admin > Tagging > Tagged items the following error occurs both under Python 2.7.6 and Python 3.4.3:

'NoneType' object has no attribute '_base_manager'

Request Method:     GET
Request URL:        http://127.0.0.1:8000/admin/tagging/taggeditem/
Django Version:     1.8.8
Exception Type:     AttributeError
Exception Value:    'NoneType' object has no attribute '_base_manager'
Exception Location: /home/username/.virtualenvs/django-organice/local/lib/python2.7/site-packages/django/contrib/contenttypes/models.py in get_object_for_this_type, line 194

Error during template rendering

In template /home/username/.virtualenvs/django-organice/local/lib/python2.7/site-packages/django/contrib/admin/templates/admin/change_list.html, error at line 91

'NoneType' object has no attribute '_base_manager'

89        {% block result_list %}
90            {% if action_form and actions_on_top and cl.show_admin_actions %}{% admin_actions %}{% endif %}
91        {% result_list cl %}     
92            {% if action_form and actions_on_bottom and cl.show_admin_actions %}{% admin_actions %}{% endif %}
93        {% endblock %}

[bittner]

Related to cmsplugin-zinnia issue #54.