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On my ubuntu 8.04, I did a

gem update --system

and now everytime i try to run the gem command line from console, i get the error:

/usr/bin/gem:10: undefined method `manage_gems' for Gem:Module (NoMethodError)

What's going on? My version of rubygem was very old, but at least it was working before. How do I fix the above problem or roll back to my earlier version?

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up vote 0 down vote accepted

I re-installed ruby gems to fix this

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