[Answer]-Can't install auth.group fixture when testing – django 1.7

Ok, so finally, it seems that the problem wasn’t just when I was testing. When I changed back to running my server, I noticed I was getting the same error.

Every single similar problem I found had something to do with migrations, but I didn’t even had those, because running ./manage.py makemigrations was not generating them.

So I ended up doing ./manage.py makemigrations *app_name* for each of my apps, and everything started working again …