please hlep playing my first pbem game and keep getting "the save file you have selected is protected to ensure the assets in your mod folder have not been changed" when the previous player sends me his file and i try to open it. I have no mods other than a nocd crack (im lazy hate having to take the disk in and out) any thoughts anybody please?

I started a second game with some one and get the same error now too. I dont have a nocd crack so I dont think that is it, and teh game was working in the last game. looking for the answer too

Gary