clients hl2.exe crash

[BehaartesEtwas]

I do not know those maps. Check two things very carefully:
- make very very sure, the version you have installed is not broken. Probably best way to try it out is to start a local server from within the game with those maps.
- if those maps make use of any external resources (like sound files, models etc.) make the same tests with them.

If that is not the cause of your problem, try reinstalling the whole server. Make your first tests without any change (don't even change the config), only install the maps one after another.