I am having the same issue, however all the map files are uploaded to the FastDL server. I have no idea what is going on.
All files precache but when it comes to the maps, they don't download from FastDL, sv_allowdowload "1" works, but this causes the client to download the map from the server instead of FastDL.
Cannot continue without model maps/cs_jungle.bsp, disconnected. Can anyone please help me?