You should use our standard login window (with Element type Login Control) and then after login you should redirect to your custom function.
Our built-in login mechanism will cover both customer and user login.
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...
