Possible Fixes

Yes

Modpack Version

1.2

What happened?

I updated server (from 1.1 to 1.2) that I was playing on with my friend - I was hosting it on my PC. I placed down atomic reconstructor from Actually Additions (but I don't think that this was the cause of the crash) and few seconds later the server crashed. When I start the server, it runs perfectly fine (I can send commands and the server does respond to them), but as soon as any of us join, the server immediately crashes. This means that we cannot join the server as of right now (but I made a backup that is working before).
Note: The server was working for a while before these crashes broke it.
Note: Server with ATM version 1.1 worked just fine without any issues.

Crash Log

https://gist.github.com/Krakys1/d07a162e596926ba20d878a5df664270

Latest.Log

https://gist.github.com/Krakys1/e92ad74aea45b9dbb0c219c3c112f984

Should be fixed in the next version of AA