@iderashn said: I think I found a bug, maybe. I was having problem connecting a hinge to a object, the problem was that pressing CTRL was not working. I found the following code in input.rb def self.getKeyState(key) return (($win32GetKeyStateFunc.call(key)>>16)!=0) end So I changed the line: return (($win32GetKeyStateFunc.call(key)>>15)!=0) I tested it on Wine and it's working now. Sweet! thanks for sharing that tip. Have you had any success opening the UI?