I'm not sure if you're asking for help or posting a "leaving" note - either way this thread belongs in the "Leaving" or "Help" section~ c:
I'll move this to the "Leaving" thread for now.
What you could try to do is to uninstall FH completely, and then re-install. Make sure you save your presets/maps etc somewhere safe, and then delete the FH-folder AFTER unistalling the game.
Restart the computer, install FH again, and see if it works.
Good luck!
Try deleting the whole FH folder from Start Menu>C:, re-download the game and it should work. Also, this is slightly going off-topic, but nevertheless I think you don't really need to leave since this is a common problem. Follow the steps I mentioned earlier and it should work.