crash-2018-03-26_00.49.24-server.txt
crash-2018-03-26_00.53.42-server.txt

Server Crash happens only when Immersive Engineering is enabled, and only since updating to release 80.

Thank you for reporting issues, without people reporting them, they wouldn't get fixed. You're helping contribute to this mod and that is much appreciated <3

You seem to have IE core installed, but not IE itself. Is the main IE 80 jar in your mods folder?