[Maxximou5]

You never need sv_allowdownload or sv_allowupload if you're using a download host, set those to 0. Both for unnecessary use and for security.

As for your problem, it shows that you don't have the map on your game server or that the map is corrupted.

Lastly, you can compress most of those maps to bz2 for faster download and saving space. Excluding maps close to or over 150mb, unless you have a launch parameter set to allow it (e.g. -maxdownloadfilesizemb).