@GOG Team,

just for you information, if I use bash gog_butcher_2.3.0.4.sh
I get Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap" warnings at elementary OS (Ubuntu).

This can be fixed with sudo apt-get install gtk2-engines-pixbuf.

Also Gtk-Message: Failed to load module "pantheon-filechooser-module" are coming up at the console.
But these messages can be ignored.

Regards
Frank