Did you uninstall it or just delete the folder? You have to uninstall before you delete the folder, then right click the FH folder. (don't go in it and delete everything) Just right click the main folder, and delete. If other people are having this problem too, then its an issue with a few people but it should be fixed, soon. You'll just have to wait it out if that's the case. I've crashed before because of too many people in one map, but it was fixed later. Maybe just wait it out and not touch it for a little bit. Make sure you reinstalled the PATCH too, not just the main download.
By the way, uninstalling and reinstalling should fix the thing that you changed/messed with, because it sets back everything to the defaults.