Most likely an anticheat or ****** up cheats. Anyway, you'll notice that people wont help you with cheats in this section (though unfortunately it's the right place to post).
cheat engine crash 05/28/2012 - Flyff - 0 Replies hi all people . i playing in one p server but when i use cheat engine and use speedhack the game crash . the name of server is EclipseFlyff any 1 can help me ? ty:o