I've been working for some time now on my maps, but I constantly run into the same errors, I place a env_ambient in my map, and properly map the .wav file to the entity, however, running the map always creates an error where my map won't open, no matter what sound it is. Error 2: I constantly run into those pesky ERROR: MAX NUM MARK FACE messages, or bad surface extents or some other random message which is random jibberish to me. I was wondering if anyone could help me with these problems.