I have been using the beta version of the Gimp 2.7.x series and I encountered a problem I want to share. Obviously I also want to share the workaround solution.
Long story short, the program will have a segment fault if it is run and the directory ~/.gimp-2.7 does NOT exist. So make sure it is there. I had deleted mine.
Similar symptoms occur if the file ~/.gimp-2.7/contextrc DOES exists. So make sure it does not.