Please provide more info.
Unsupported, but you may find it interesting. Mark V - Mac Requires Mavericks or later - Untested except on my Mac
GLQuake + WinQuake builds. ProQuake aim support, loc support, NAT fix. Contrast support, but no hardware gamma support.
Is the source of this on version control? I'd like to contribute
Also it says it can't find my quake directory when it's in it
Set The Basedir
I set the basedir and still get error:
Couldn't load gfx/palette.lmp
I forgot that the debug build has an #ifdef DEBUG in it that has a hardcoded testing directory.
I'll build a release build and upload later today.
You also might find Quakespasm useful, it has mature OSX support: http://quakespasm.sourceforge.net
Both it and MarkV are Fitzquake derivatives.