try to delete the full save folder, or reinstall the server. if u using lgsm too, i can handle my update problem with delete the password part at the branch, coz the force update command cry for "wrong pw"
branch:"-beta iwillbackupmysave"
./'pzserver' force-update
UPDATE:
Now i can update with the force update command without the branch line in the cfg, so i leave that empty. (branch:"")
it works at the new patch and don't need to wipe;)