Ruby gem indicative of not being installed even though it is

I'm having trouble running rails on Snow Leopard after having installed flutie and formtastic. Essentially I added the following li开发者_如何学Gones into the Gemfile:

gem 'formtastic', '~> 1.1.0'
gem 'flutie', '1.1.1'

After running bundle install these are then installed in the output. Infact bundle check runs correctly also:

The Gemfile's dependencies are satisfied

Even running bundle list shows that the two gems are installed:

 * flutie (1.1.1)
 * formtastic (1.1.0)

HOWEVER! When I try to run any rails command, I get the following error message:

Could not find flutie-1.1.1 in any of the sources
Try running `bundle install`.

I have run rake flutie:install after installation and was trying to run the formtastic installation through rails.

Any ideas? Any help is appreciated!

NB: The rails version I'm running is 3.0.1 and ruby version is 1.9.2p0. I compiled this from source on OS X 10.6.4. The same versions on a Win7 box seem to work fine!

I'm not exactly sure what was happening however installing RVM fixed the problem. I highly recommend anyone else having problems with Ruby on a Mac tries RVM first!