Are you using that old login generator, the salted hash one? If so, you can probably just remove the :model calls. The new autoloading that happens with models should work fine, assuming you are following normal Rails conventions (ie user.rb holds a User model). We have an old application that uses the salted hash login generator, and we just removed the model calls.
Also, don't use that generator for anything new =). Take a look at acts_as_authenticated for something more up to date with the latest rails stuff.
- Rob
