You should remove it from the server, the map's break if someone goes back after switching levels, the maps are tiny, it's not meant for coop, and this seems to happen on the 11th level:

Code:

Commencing connection retry to 24.4.45.55:27015 Connecting to 24.4.45.55:27015... Connected to 24.4.45.55:27015 Classic Co-op Map: deadsectorsource_11 Players: 1 / 16 Build: 3791 Server Number: 12 No pure server whitelist. sv_pure = 0 Map [maps/deadsectorsource_11.bsp] has incorrect BSP version (1007304300 should be 20). Couldn't CRC map maps/deadsectorsource_11.bsp, disconnecting Host_Error: Disconnected

Which locks up the server, as peeps can't join to change the map. I've deleted the map from my harddrive + re-downloaded from server; didn't fix, downloaded the mod from a Russian site somewhere and took the .bsp's out; didn't fix.

Will do that right now. Also if you get crc errors please tell me immedietly, it means you are being sent to my http server to download the map, but instead of downloading the map you are sent a 404 or 403 error because I made a mistake of maybe calling it Deadsectorsource instead of deadsectorsource(Capitalization matters). When you are sent the 404 error, or whatever error, the game just creates basically a blank bsp file with a .res file of the map, showing exactly what the server responded. So if you opened that res file in your browser, it will give the best description of what's going on.

Also reason I haven't been on is that I'm having a bit of trouble lately (not related to computers D:)