Launching custom maps

[waytofail]

Hi, I have a few custom maps downloaded ingame from servers, and wanted to try jumping on a few. I tried loading the map through console, but it just causes my game to crash? I'm doing it the same way that I used to load gap_range (making home server thing, then typing map mp_gap_range in console)
Any idea's?

[kalenjder]

is there any messages comming up?