Silent hunter III with steam

[HerrRitter]

I've using the Steam version of SHIII, and it worked perfectly. I downloaded the GWX megamod, and put into the Steam folder where I keep SHIII. Everything works fine, until I attempt to start a campaign. It crashes, everytime.


Is there some way around this? Have I made a mistake, somewhere along the way.


Note that when I load the game, via Steam, it loads like the Grey Wolves mod, the Academy looks like Grey Wolves, and I set up the campaign properly. It just doesn't load the campaign ... it loads about 80% of it, and then crashes.


EDIT: My computer uses Windows 10. I tried compatibility mode for the game in Windows XP, and it works perfectly.