I am having trouble loading Django fixtures into my MySQL database because of contenttypes conflicts. First I tried dumping the data from only my app like this:

./manage.py dumpdata escola > fixture.json

but I kept getting missing foreign key problems, because my app "escola" uses tables from other applications. I kept adding additional apps until I got to this:

./manage.py dumpdata contenttypes auth escola > fixture.json

Now the problem is the following constraint violation when I try to load the data as a test fixture:

IntegrityError: (1062, "Duplicate entry 'escola-t23aluno' for key 2")

It seems the problem is that Django is trying to dynamically recreate contenttypes with different primary key values that conflict with the primary key values from the fixture. This appears to be the same as bug documented here: http://code.djangoproject.com/ticket/7052

The problem is that the recommended workaround is to dump the contenttypes app which I'm already doing!? What gives? If it makes any difference I do have some custom model permissions as documented here: http://docs.djangoproject.com/en/dev/ref/models/options/#permissions