I’m mapping for a mod for Q3. I get this error, ERROR: SV_SetBrushModel: NULL, when I try to run my map. If someone can help you can reach me on my aim name immediately rei081482, or just post here. Thank you
ERROR: SV_SetBrushModel: NULL
Ok, so I found out that I’m getting this error because I most likely have a brush that is 1 unit think (paper thin). Well my map has a few thousand brushes in it…is there anywa to find something like this, and no bobz cleanup tool does not work for this
well i figured out the problem, thanks for the help guys 
Just in case someone else may have this problem in the future, there was some sort of phantom brush, not being picked up by bobz cleanup, although it was hardly a phantom brush. I had to go through and check each entity.
Easiest way…Hit “L” go to your entities list. Mine just so happened to be breakable, so i selected and went through the list of the func_breakables. On the left grid, sorry I don’t know the name, where you can change the heighth of the brush. Well It was basically infinite, I could not find an end or a beginning, and showed no sign in any other window, so i just deleted it. Hope this helps someone eventually. 
Was it part of an entity that required an origin brush?
If so, what I’d guess happened was the brush was scrapped cos it’s wrong, which would leave you with an origin brush in an invalid entity - which is what usually generates that error.