Please create a field for Transport company info in SL invoice as it was in old Books version 6.3. >> SL Invoice>> Currency>> Freight Comp. According to Latvian law it is mandatory to display Freight Company info on goods accompanying documents.
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...