I made a map in the far cry sandbox and for some reason, somewhere along the way, the Pak file for the map I was making got corrupted. Before this happened the Pak file size was about 15,000 K and now it's about 72 K. For some reason I can still open my map in the editor and everything looks fine, but when I try to play the game in multiplayer, it is really messed up and there isn't really anything there. What I'm wondering is if there is a way to recompile the Pak file from the editor? Does anyone know what I can do?????

"Re-export to Engine" and then try.

If that doesnt work, rename the bak file in the folder to xxx.cry and load that. Again, "Re-export to engine" and see what happens.