Turn Off And It Say The Same
MAYBE u Did something ON THE CROSSFIRE FILE thats why its reacting like that try reinstalling..
Have you downloaded all the requirements ? Turn off your anti-virus run ccleaner, then delete your Z8Games folder (C:\Program Files (x86)\Z8Games\) delete everything inside your Prefetch/Temp folders and then download crossfire again and the install.
Do all that and see if it works...
As your pc is saying, a file(es) is corrupted, uninstall, redownload, and reinstall
good but if it still not working uninstall it and delete everything of crossfire in register and restart
re-dowload and restart PC
The files are corrupted so do what arch said uninstall and redownload and install and play.