When adding gibbler to your .gemfile and starting the rails server, the following error is thrown:
undefined method `__gibbler' for #ActionView::FileSystemResolver:0x103dd0ac8
See the full error here: https://gist.github.com/1163868
I guess Gibbler is trying to add the gibbler methods to things that I don't want it to.
That's curious. Thanks for reporting it.
I don't use rails at all so it'll be difficult for me to test and fix, but I'd happily pull in a patch.