FAIL INJECT ON EVERYTHING?!?!?! PLZ HELP

Every time I inject a hack successful into Engine.exe, then Combat Arms will close down once i get to the screen with the big picture with the girl and 2 guys.
Because of that i just clean out my Engine.exe each time i does that then it works again.
PLEASE HELP

OH OH OH thank you I thought my computer was being a jackass thanx alot