Rails 3.0 & Ruby 1.9.2rc: Rake commands return 'already initialized constant' & stack level too deep errors. Any ideas

Question

I\'m trying to run Rails 3 beta 4 & Ruby 1.9.2rc on Ubuntu 10.04. It worked initially, but after doing my first bundle install/package, I now get the following errors in

Answer 1

I was able to solve this issue by downgrading my rubygem install from 1.8.10 to 1.7.2.

gem update --system 1.7.2