Description of the issue:

Just playing. Both times this happened I was using RailCraft, TE and EIO to convert fluids. Not doing much with IE at all, but the crash is pointing to it. I only have basically two windmills and one water. That's the only thing I'm using IE for.

Crashlog:

https://pastebin.com/mNAZJwem
https://pastebin.com/ZPK31TQt

Versions & Modlist

IE 0.12-89
MC 1.12.2
Forge 14.23.5.2822

Mod list: https://i.imgur.com/DKg3sBP.jpg

Memory Access Violations are a rarity in Java, and nothing in that particular part of IE's code hints towards why this would happen. There is no reflection, no weird memory access in there.
I've got not the slightest idea...

Update: I removed a water wheel that was being powered by lava. The CTD seems to have stopped. This appears to be what was causing it.

Also try removing VanillaFix and Phosphor. VF does a lot of very strange things, many of which can cause issues with other mods. I'm not sure how much Phosphor does, but it's definitely in the category of "mods that make strange changes to internal things".

i've seen this one before somewhere with the exact same report

try removing foamfix for a test please
(i think i suspected an issue with how foamfix affects the spriteatlas but the lost track or memory about the issue)

i found it i guess
#3448

Yea, I understand. Just letting you know.

@marikc0 did it actually help? which one caused it?

this issue can be reported to the mod then to get this fixed but we need to know which was causing it

It's difficult to test. I would have to remove one by one and play for some hours without each mod to wait for a crash. I wish I could do it more easily. The crash was a bit random and wouldn't happen for a few hours sometimes. Just got lucky and remember that it started after using lava on the water wheel and when I removed it the crash stopped. Sorry, wish I could be more help than that. But this is here at least as an advisory if people encounter the same problem and they can remove lava if they were using it.