The problem is in the file /usr/lib/ruby/1.8/rubygems/remote_fetcher.rb at the line 263 there is an attempt to use StringIO without importing stringio
adding following line to top of this file fixes the problem require "stringio" -- gem command is failing to parse "gem source index". https://bugs.launchpad.net/bugs/270619 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs