Orcs on the March Batlle Freezes

[jkap]

This is the only Campaign in the Platinum Edition that freezes up on my PC.
It says Ver 1.3 build (6151). Armored Princess Defender of the Crown and Arena Champion all played fine with No problems.
The Battles started freezing up when I got to the 2nd Island Scarlet Wind.
It happens around Turn 4, so if you can't beat the enemy in 3 rounds it will freeze up. I had longer battles at the beginning on Debir that didn't freeze.
Does anybody have any idea what the problem might be. Could picking up
the 1st companion caused a problem or is there a known problem.
I'm running HP Pavilion Elite HPE-510y PC
with Windows 7 and AMD Radeon HD 6570 Graphics Card with 1GB DDR3 dedicated memory.

Thanks for any help

[hagalaz]

I have a similar problem on build 6171. Batlles freeze after blood shamans cast the thunder spell. Usually on the 3rd/4th time.