[Sparrow]

When you installed and played the original Dungeon Siege, were your saved games stored in a folder within your DS folder? After installing LOA, the game now wants to store your saved games in the My Documents folder, with your operating system, in the C partition. Look in your My Documents folder that accompanies your operating system, and see if you now have save folders for DS and LOA there.

The way Microsoft did this is very irratating to me, because I keep my games on a different drive from my operating system. I once tried to move the saves to where I wanted them, but it didn't work.

You might try just copying and pasting your old saves from their original location to the new location. I'll bet that would work.