Are you sure this is GlobalUserPasswdVc fault? Have you tried to export just this register via Database Maintenance > Register export option and import to new version if it fails?
This is not the issue of upgrade SERP. But serverip.dat in this case contains the value: 192.168.88.12:1301, so this is local IP of the server with SERP.
Anyway I don't understand what do you me...
