/vr/ - Retro Games

What the fuck am i doing wrong? Can someone spoonfeed a retard? I just want to play the quake mission packs even though I found the base game pretty lackluster.
They boot up fine in glpro but I can't seem to boot into them in quakespasm, either with the command line or the console. The former just gives me this error and I'm not sure how to fix it.