Well tested Durrandon campaing and got again the not able to load.
Here is what I told about wildlings having invisible icon.
The Umber and Durrandon campaings had this problem and they both crash savegames.
Greyiron the wildlings disapeared like destroyed after the Others came (not showing on the loading order), and the savegames havent crashed.
It seems like the wildlings faction acts as a ghost faction that doesnt disappear / is destroyed as it should.