Open Server crash after 1.11.0->1.12.1 upgrade



Summary of the problem Server crash after 1.11.0->1.12.1 upgrade

Pack Version 1.10.0

What is the bug? Server crashes before finishing loading on my map.

version 1.12.1 actually, can't select it in dropdown.

Mod & Version Probably IC2 mod, which is packed in this modpack, judging by exception.

Link to log file

Is it repeatable? yes, one just needs to try starting the server with my map, I can share it if needed.

Known Fix