Can't play some maps

I only have 2 maps that i can't play.
kz_kzlt_dementia
risk_snowcastle

when i try to enter dementia it just gives me that error

BUILD 4554 SERVER (0 CRC)
Server # 13
Host_Error: Disconnect

And my steam cs just freezes at loading snowcastle. i have no problems entering the map in non-steam. Just freezes so i have to close it from task manager..