hiya
look into your steam folder -------> condition zero .. create a map folder
if you dont have condition zero in steam .. this post is useless
got this problem also..have condition zero installed ..and in steam also..for the updates etc..and in the "normal" condition zero folder on my hd..there was a map folder
but not in the steam..condition zero folder
just create a map folder and all should be fine
hope that this helps
have a nice day
minh