If you were using a hack or Bypass with the name "BugTrap.dll" this might have been detected by the Anti-Hack System. Please use this thread as a guide or stop the use of this hack until updated; http://www.mpgh.net/forum/243-crossf...esnt-work.html
If you were not using a hack, I suggest that you completely uninstall your Crossfire game from your "Add/Remove Programs" And then Re-download from the official Website.
If none of this works, Please take a screenshot of the Error or translate it using an online translator. This will greatly help us to help you.