This is what you do
1.) go to where you have saved the hack C:/Nexon/Combat arms/MPGHpub.exe or w,e
2.)After you see the MPGH hack give a right click on it and select "Properties"
3.)After that the MPGH pub properties are going to pop up then give a check mark on says "Run this Program in compatibility"
4.)After that Select "Windows XP(Service Pack 2)
5.)then click apply and then Ok
6.)After that give a right click on "Combatarms.exe" The is located in the same folder.
7.)Then we going to do the same thing ,give a check mark on says "Run this Program in compatibility"
8.)After that Select "Windows XP(Service Pack 2)
9.)Then click apply and then Ok
10.) You're Done if you didn't undastand this just comment me back