Migrations fail

[tuky]

Migration 0003_auto__chg_field_testuser_facebook_id.py cannot be applied because it tries and fails to cast column "facebook_id" from char to bigint.

Possible workaround:
syncdb --all
migrate facetools --fake

Favorable long term solution:
Split migration 0003 into 2: one to remove the column and one to add the new big int column. I don't know if it is possible to do it smarter and actually try to parse the char IDs as bigints.