Mega Campaign locking up

[Maciejewski]

Help!
Issues with Desert Fox Mega Campaign!
Every time I get to the Hard Pressed Battle (Agedabia Region) Senario, I make my selection on the orders screen for type of battle, then when I issue my orders in the chosen battle the game locks up.
So I restart the spwaw, select mega campaign, select the saved game and it loads, then when I push Continue button it loads a start turn screen from the regular spwaw game and lists me as Yugoslavia! (this screen will last about 1-2 secounds then the whole game crashes!)
I have played up this point 4 times!! and it does the same thing!
I had the 5.3 version of spwaw and upgraded to 6.1
and I have no other issues with the rest of spwaw game
Please help as I enjoy the Mega Campaign