I had some issues getting it running first time, it has some dependency on ref_softsdl.so inside .quake2 folder? After deleting .quake2 folder and starting over, and copying the pak0.pak file to the correct directory I was fine. Very playable indeed, well done Matias Perez and/or anyone that has contributed to this port.

The app installs itself in the /opt folder not the /home/user folder, is this the cause for it not running?