trouble testing map

[Zero Ame]

Ive been working on a map for the last couple days and i always test it inbetween doing things such as adding a room or adding details to a room or whatever. Well I had just added another room to my map and I went to test it and got this error.

ERROR:
SV_SetBrushModel: Null

I had no idea what that ment so I tried removing the room I had just added and tried to test it again and I got the error again, can someone please help me?

[Survivor]

Google:
http://www.google.nl/search?hl=nl&q=SV_SetBrushModel%3A+Null&btnG=Google+zoeken&meta=

First link:
http://www.katsbits.com/htm/tutorials/common_error_messages.php?subaction=showfull&id=1149147724&archive=&start_from=&ucat=15&;

[Zero Ame]

ok thanks, that fixed my problem and now i know how to avoid it ^_^