The ScreenSelector.so error seems not to the fatal one, because i've have it also on my system all the time without any problems starting the game.
Just have a look at the Readme.txt in the game folder, there are a few start options for debugging.
My worst expectation is that your chipset GFX doesn't meet the minimal requirements, but that can only be answered by the game devs. Maybe it's helping them if you can post the output from 'glxinfo -B'