Please update your system to released 8.4 2017-11-25 and test there. If you can repeat there, please report a bug, attach crash log (verbosity debug detailed) and forward this crash causing email to local Pm's.
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...
