Try this:
First go to your CF Folder : C:\Program Files\Z8Games\Crossfire
Copy and paste your xTrap folder to your desktop or somewhere else where you'll remember where you put it. (You might need it just in case)
Then delete the xTrap folder from your CF Folder.
Load up Crossfire, it'll redownload the xTrap Folder(Backed it up just in case something goes wrong).
It works for me, other wise temporary disable your antivirus to see if that's the problem. Or/and run administrator mode. (xp/vista/7/8)
If it works then PM me the code thanks!
PS. what do u mean u hire computer geeks to fix your computer? I never of that group, do you mean geek squad? (or is it some local business you went to?)