I translated my model into english to make everything more understandable for the list. There is were I messed up (next time i do everything in English right away). I rechecked everything after the message of Nuno and removed an error.
Now everything works perfectly. Thank you Bruno and Nuno! -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
