Cheat Engine

[Play3r23]

Im trying to Hack Army attack with cheat engine and other programs like 1 week now without break..

Yesterday at Night i did Format to my laptop and i installed New Windows 7 Ultimate 64bit GR

After Format i installed Firefox 8.0 and cheat engine 6.1
I Logged 1st time to army attack, my money was about 1.200, i did a first try in cheat engine to make my money 110.000
My money Went 110.000, and i tried to Open the CENTER - MAP area for 50.000 and it Worked!!!! then with my other 50.000 i tried to buy One Rocket Battery for 30.000 and worked !!! WITH OUT FIREFOX CRUSH!!!!
then after 10 minutes i Closed Cheat Engine.. i made one refresh to Firefox-army attack and i saw that i have 30.000 AND my OPEN MAP AREA AND MY ROCKET BATTERY CAR. all PERFECT.. then i tried again to make my money 110.000 to buy something else and every time i got CRASH FIREFOX like before.. Anyone have any idea? for first time CHEAT ENGINE WORKED PERFECT WITH 100% SUCCESS , and after every time again CRASH !!! ..

[Play3r23]

any ideas?????