My problem is that i can not save in CS while i'm trying to editing with DLC Frostcrag enabled. when ever i attempt to save with the Frostcrag esp enabled and then i go to save my work the CS crashes. And when i try to just try to edit the frostcrag esp i get a warning and it says "unable to complete operation due to failure removing previous file, temp file remains." Please help i don't know what to do, my os is vista i'm running the construction set in widows XP Please help