Crossfire Invalid game client error ! WTF HELP PLZ

When i turn it on and click start an error comes ! A message comes which says 'Invalid game client , install the latest version' . I reinstalled the game , it worked once and the same problem started . I then redownloaded , reinstalled ! it worked for once and then same problem again. It seems like alot of peaple are having this problem ! I googled it and many peaple were discussing this same issue on different forums but no one actually had a permanent solution to this problem. Cant crossfire do something about this issue ??? will the new patch fix this annoying problem ? because no one wil want to reinstall the game evrytime they want to enter !!!!! coz it works one time after reinstalling ! if you quit and again open , the same message appears ! WTF plz help