Try changing the DEP settings for Engine.exe:
Windows 7 ( I don't know how to configure these settings for older versions but I think it is the same)
1) Click Start
2) Right click on Computer and click Properties
3) Click Advanced System Settings
4) Under the Advanced tab click Settings under Performance
5) Click the Data Execution Prevention tab
6) Toggle the circle button that says "Turn on DEP for all programs and services except those I select:"
7) Click Add
8) Add CombatArms_Direct.exe (if you use it for hacks) and maybe even Combat Arms.exe / Engine.exe
9) Apply, etc. and then try again
If it doesn't work try updating DivX and use MPGH FIXIT (located in Help Forums)
Also: Usually hacks that crash your game while loading are detected so try to use Byte Cipher (look in previous hack releases for Black Cipher)