Rails 3.0和Ruby 1.9.2rc: Rake命令返回“已经初始化的常量”和堆栈级别太严重的错误。任何想法

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 all rails projects. Even a basic 'rails new testproject' followed by a rake brings up the error messages.I'm trying to run Rails 3 beta 4 & Ruby 1.9.2rc