When I start Ubuntu Tweak from Dash, System settings or Terminal, it immediatly crashes. I get this error code from the Terminal: Traceback (most recent call last): File ...
I'm unable to run Ubuntu Tweak. It seems to have a problem with Python or something, but I'm not sure. Here is the output: /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:47: RuntimeWarning: ...