From: Benedikt -- Date: 2012-11-02T22:18:53+09:00 Subject: Re: undefined method each_pair Found a solution, but this really didn't satisfied me. Just upgrated all gems to the newest version. This signs that this must be a versioning problem. But again ... i checked all gem versions! How is the versioning of the gems handled? Is it possible to change the code of a released gem? Any Ideas how to compare this? greetings -- Posted via http://www.ruby-forum.com/.