CODMW2 70 hack

So I downloaded the MW2 rank 70 hack and i followed every single step carefully. When I started up MW2 I pressed easy upgrade and it ranked me up all the way to 70 as expected. I played one game of team deathmatch (people said you should play 1 game to ensure the rank is saved) and after I finished the game I exited MW2. A couple hours later I started up MW2 again and, "Your data is from an old version of the game. You must reset your rank and unlocks to continue." I reinstalled Modern Warfare 2 Multiplayer also and the problem is still happening. SS below PLEASE HELP

**Here is the link of where I downloaded the hack.

http://www.mpgh.net/forum/191-call-d...l-70-hack.html

I downloaded the 1.068 version because of the MW2 Multiplayer update.

[IMG]http://i262.photobucke*****m/albums/ii106/holyguacamoly290/FAIL-2.jpg[/IMG]