It means he has some hidden cleaning to do, dougy send me that map!
ERROR: SV_SetBrushModel: NULL
The map has some brush ents which are only one unit thick (paper thin). I'm not sure what the minimum thickness is supposed to be, but it apparently needs to be thicker than one unit. You may also get this error when you have a brush model entity which does not have any valid brushes, i.e. a func_rotating with nothing but a common/origin brush. This could also be caused by a func_areaportal with a common/areaportal brush.