stack level too deep (when changing model inheritance)

[harvj]

I'm trying to use this gem to convert some models that already exist in the following way. So far this works:

Created models:

Attachable < ActiveRecord::Base
Link < Attachable

I added acts_as_citier to both models, created and ran the migrations with no problem. Views are created as well. Now if I try to do this to an existing model:

Before:

SpecialLink < ActiveRecord::Base

After:

SpecialLink < Link

and then I try to run any command like rails g migration or rails console, I get:

script/rails:6: stack level too deep (SystemStackError)

Unfortunately, this doesn't tell me a whole lot beyond a suspicion that I have an infinite loop somewhere. Does anyone know what might be causing this? Or have an idea of where I can look or get more information about the issue? It would not be a good solution for me to have to create the models again from scratch to work with citier...