WTF?!A VERY WEIRD ERROR

[Guest]

Well i am playing MTA:VC since 2002 and i am very happy.now 4 years later i thought i would see my old friends again.but if i want to press the "Start Game" button this message comes:XXXXXXXXXXXX0000111111!:You are playing MTA:VC 0.5 without hackx.Please Reinstall.!111111000XXXXXXXXXXXX"WTF?!

I DONT WANT TO PLAY MTA:VC WITH CHEATS.WTF HAPPEND WHILE I WAS AWAY.I never thought that in those 4 years where i wasnt playing i woul see something like that

[MrJax]

If the answer isn't HERE, post the exact error.