map won't compile, no errors, WTF??

[Sacrifist]

1 degenerate face.....

You need to fix this issue. It's not easy to find if your map is large. A degenerate face is usually on an angled brush of some sort. Can be func_detailed or just a world brush, doesnt matter. Cordon the map off in sections and compile the cordon sections to look for the degenerate face and keep shrinking the cordon until you pin point the brush face and rather redo the brush or remove it completely. Sometimes, 1 degenerate face can screw up all the lighting in a map.