Possible Fixes

Yes

Modpack Version

2.1

What happened?

Noticed the Source input could be assigned to take or send Source.

Placed an Ender Source Jar on top of the Reinforced Source Hatch.
Used the Dominion Wand (from base Ars). Right Clicked the Ender Source Jar, then Shift Right Clicked the hatch.
Immediate crash.

Currently unable to re-enter the world.

--- I believe it was the reinforced hatch, could hold 2000 source.

EDIT: Was the Reinforce Source Input Hatch

Crash Log

https://gist.github.com/SquirrelCMDR/2a13260cc1252ba27dec04249150ae81

Latest.Log

No response

Another note, this hatch was placed on a Runic Crucible multiblock and it was properly formed (the machine parts all turned black like they are supposed to).

Yes its currently unusable and ATM star thus uncraftable, i believe it along with some other MMR issues will be fixed in the next patch