Description of the issue:

Walked through my base and BAM, crashed, I was not interacting with anything.

Crashlog:

https://gist.github.com/ProsperCraft/d14261b7ec615de381682c9e29d61780

It would appear that I had the same issue in 1.10.2 and it was closed without comment.
#1677

Versions & Modlist

ImmersiveEngineering-0.12-78
See crashlog for full list.

We had a report a few days ago stating that this was caused (directly or indirectly) by OptiFine. The "fix" suggested by the OF author won't actually fix the problem, just this specific crash. I'll add some debug printouts to help find the cause in the next release.

Are those already in Malte or do you need to add them still? I'm in the process of wrapping up here

Should be there in ~15 minutes (unless something gets in the way).

I do not have Optifine in my client.

I didn't have optifine in 1.10.2 either.

Just for the record.

I've implemented a workaround, the crash shouldn't happen in IE 79. However there may be significant lag in situations that would have crashed before, so this isn't ideal.
With IE 79, please enable the enableDebug config option (should be possible with the in-game GUI now). That should cause a crash at the same point as before, but with a lot more useful information. Once you have that crashlog please upload it here.