Data Execution Prevention (DEP) error

[rtsfreak]

I can't to find a solution for this.
I'm also running Windows Vista Ultimate.
3ghz E8400
Geforce 8800GT.
2GB Kingston HyperX RAM


I tried the "compatibility mode for Windows XP SP2" and still have issue.
I also tried excluding King's Bounty executable in the DEP settings but it says that kb.exe needs to use it. Why???
I tried seeing if I could exclude my other games from DEP and the checkbox shows and works just fine.

Luckily I have saved just previous points before the same DEP incidents happen.

I got first error immediately after defeating "Lucky James" Castle on Islands (I already completed mission with "RedBeard" giving Black Seal to "Lucky James). It seemed to work again after reloading the same save point about 3 times.

Figuring I killed the Kraken already and now killed him, I decided to go back to his Beautiful fiance (I forgot her name) to see if she'll let me marry her cuz her fiance is dead. The time it crashes with DEP again, is just after when I ask her to marry me and I click on the response that "James and the Kraken are dead".

I'm going to try to kill James first then the Kraken. Then go to James fiance and see what happens.