Civil War II sets up the same on my computer, with the saves in documents\ my games \Civil War II. it's probably correct but I have had no crashes thus far.
I really don't like it as all other Ageod games I own are in c:\Ageod\ and the saves end up there nice and organized. I hope someone can help you with the crashes but the set up looks similar to my setup.
All the best!
AGE games I own; RUS ,AJE, BOR, H:ToR, AACW, WIA, ROP,NC, CWII, Espana 1936, TYW