Foxpapa

So for no reason i started to get Errors when i wanted to start the game 4 or 5 days ago, the game would not start but i fixed it with uninstalling and installing again. After reinstalling it worked for aprox. 4-5 hours until the error came up again, i uninstalled it but this time it didnt let me install it again and says "Multi Theft Auto has not been installed properly, please reinstall" Tried reinstalling for 10-20 times now but it wont work. help please!