While trying to use South for database migration, it gives following error,
! Cannot freeze field 'account.account.timezone'
! (this field has class account.fields.TimeZoneField)
! South cannot introspect some fields; this is probably because they are custom
! fields. If they worked in 0.6 or below, this is because we have removed the
! models parser (it often broke things).
! To fix this, read http://south.aeracode.org/wiki/MyFieldsDontWork
You need to put at the end of your models.py file
from south.modelsinspector import add_introspection_rules
And South will be able to freeze anything !
This was added in b129ec6