I installed Ruby 2.0.0 (on a Win7/64 PC) and it works fine with RubyMine 5.0.1. But if I then go to "File" -> "Settings" -> "Ruby SDK and Gems", a "Install Gems..." doesn't work.
Obviously, this is because the "Ruby SDK" is a Ruby 2.0.0 level while the "Language Level" is still version 1.9, because if I switch back the "Ruby SDK" version to 1.9.2-p290, everything works as expected: RubyMine finds Gems and installs them as it shoud.
But as you see on the screenshot attached, I cannot switch the "Language level" upwards to V2.0 -it is greyed out:
I'm stuck -what do I have to do to be able to change the "language level" accordingly?