Ah, so sorry to hear that ye are 'aving difficulties with the game. I'm sure that we can get ye back on and enjoying it real soon.
Now, when ye are redownloading FH, are ye doing a clean install? Meaning, did ye delete all the old FH files b'fore reinstalling the game? If not, old files could mix and hamper with the new ones, causing y'er game to still not work.
Also, might I ask what type of computer y'er using and how old 'tis? Computers such as Macs run the game differently, so knowing what kind of computer will help us forum techs figure out the issue faster.
Ye may be missing the X11 file, which will give ye that error.
I hope this helps ye deary. If not, I shall try m'best to help ye find a solution.