This person had a similar problem. Hopefully this can give you some clue to help fix your issue:
http://stackoverflow.com/questions/26276397/django-1-7-upgrade-error-appregistrynotready-apps-arent-loaded-yet -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/7d13ff6a-d684-4a7f-950a-da273353b68c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
