Can't install the demo:(

[dei]

ok, fixed it by running it with root (sudo) permissions (the X_ChangeProperty-Error) already showed up before making the graphic settings an pressing play, so it's most likely not related to the error.

Installed it with root permissions into /usr/local/games, so I it should be a thing of some chmods to fix it.

Without root it still exits without any error or debug message on the cli. Will investigate further and report back if I'm successful at fixing it with a chmod.