Admin not working

[Visgean Skeloru]

Hi I have following project: https://gist.github.com/Visgean/f1582474437148bbb962, I have posted there all my admin, translations and model files. 

The problem is that when I try to runserver, it gives me the error modeltranslation.translator.NotRegistered, even for models that are registred. 

when I turn off admin.autodiscover it runs fine. It also runs fine when I do admin.site.register(Course) instead of admin.site.register(Course), is it possible that admin tries to register the models before the translations takes place?

Thanks for the help