This comes from a small issue that I ran into while working on one of my projects. When I would try using django-tinymce‘s HTMLField while using South, it would throw a nice error when attempting a migration. To anyone else having this issue, you may be pleased to know that the fix is simple. Add the following code to the models.py file that contains the models that are affected (have at least one HTMLField). I personally recommend placing it after the import statements and before the model classes.
from south.modelsinspector import add_introspection_rules add_introspection_rules([], ["^tinymce\.models\.HTMLField"])
