[TxMt] RSpec bundle trouble

[Nate Smith]

Hi,
I'm using the RSpec bundle, and when I run the "Run Behavior  
Description" command, I get the following output:

/Users/nate/Library/Application Support/TextMate/Bundles/Ruby  
RSpec.tmbundle/Support/lib/spec_mate.rb:2:in `require': No such file  
to load -- rubygems (LoadError) from /Users/nate/Library/Application  
Support/TextMate/Bundles/Ruby RSpec.tmbundle/Support/lib/spec_mate.rb: 
2 from /tmp/temp_textmate.UKmbLu:3:in `require' from /tmp/ 
temp_textmate.UKmbLu:3

Anyone know what the problem is?

Thanks,
Nate