mitsuhiko/flask-sqlalchemy — pull request #89 by jpanganiban (2012-07-23 09:23:35+00:00)
Title: "Fix for AttributeError: 'SessionMaker' object has no attribute '_model_changes' when using fixture to load fixtures"

Hi,

I encountered the same error as this (scenario is also stated in the link): http://flask.pocoo.org/mailinglist/archive/2011/3/6/flask-sqlalchemy-and-fixtures/.

Thanks