My backup in the documents folder saved before the update so i fixed my ruined save! I just deleted the currupted save and copied and pasted the backup renaming it after the ruined one. I don't know if this will save anyone else but it is worth a try. Check: C:\Users\Owner\Documents\Mount&Blade Warband Savegames
if you have a backup save before the update you may be ok. Now i will check for updates before launching and go offline mode in steam until I hear the update is safe.