I do some Facebook work for my customer, and when I checked out current source into my dev environment, application didn’t want to work :) Basically Facebook related code did not initialized properly.
I was curious what is causing it and finally gave up (RFacebook plugin upgrade did the job), but it seemed that it is something related to RubyGems version. So I did RubyGems downgrade and upgrade several times. I did it via fetching RubyGems source and
I’m not sure if it is FreeBSD specific, but if after RubyGems upgrade (I did upgrade from 0.9.4 to 1.1.1) You are experiencing:
/usr/local/bin/gem:23: uninitialized constant Gem::GemRunner (NameError)
Then just delete
/usr/local/bin/gem and symlink