Yeah ok.Check settings and see if allowed download from servers is enabled, or you might have to manually download and place into the map into your tf2 folder
Worked for 1 map but the rest same problem.You have to manually delete that file from your hard drive, and rejoin to re-download the whole thing. The same thing happened to me with certain Skial Hale maps, when they fixed them for exploits.
Programs Files (x86) > Steam > SteamApps > Common > Team Fortress 2 > tf > download > maps > find and delete the maps that don't function.
When you join this server, or cycle to them, the maps will automatically download with the new format, and should be functional.
I Fixed it and I still cant believe it worked, I set my browser back to IE and downloaded the latest flash player for steam browser and it fixed it, how the fuck does this work, I DON'T NO.Download the maps manually.