I just updated to Ruby 1.9.3p0 and Rails 3.1.1. Now when I try to launch the server, it complains that I should install ruby-debug, even though it's already installed. % rails server --environment=development --debug => Booting WEBrick => Rails 3.1.0 application starting in development on http://0.0.0.0:3000 => Call with -d to detach => Ctrl-C to shutdown server You need to install ruby-debug to r
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