Crashlog

Does this happen during startup or on loading the world?

Startup was ok. Crashed on loading the world, about a 1 sec after.

Ok, I'll see if I can talk to McJty. The crashlog is a little puzzling to me and it could easily be an issue on McJtyLib's side.

Ok, I was actually unable to recreate this, so could you install this version of the mod and send your whole log, logs\latest.log? I've added a line that will print out the names of the stacks that are being acted on, and the last one will be the one which crashes.

Tested this version - no crash on world load, still crashed after successful load a bit later when I opened inventory and point to depleted TBU fuel and pressed shift. Still could be something to do with rftools builder running as quarry in another dimension.
https://pastebin.com/xiTyts5g

[21:49:08] [main/INFO] [nuclearcraft]: 1xitem.charged_porter@0
probably what you looking for?

Tested again - definitely crashed on opening inventory and just pointing to rftools porter.

Thanks very much, and thanks for posting on the other issue. Definitely a weird one though - I am still unable to induce this crash. I'll try downloading some of the other mods you have.

Ok, so I found out what's going on - this was not a McJtyLib issue, but just a mistake I made in registering capabilities. This build should work now :)

Ah, I have a suggestion - perhaps try Forge 2758 or earlier?

Tried 2757, 2750, disabled:
foamfix
smoothfont
topaddons
Still crash on charged ported in open inventory, no other items in inventory affected.
Definitely crashing on trying to show tooltip.

Alright, the search continues!

Addition: dimlets and parts from rftools not crashing - show tooltip ok.
Also disabled:
TOP
grappling hook
MAGE

Same.

Well, I installed every single mod that you had and I didn't get a crash - what if you install nothing but nucleacraft?

Tested - crash is gone )
Gonna try new things.
Good work, thanks.

Awesome! Thanks for helping out :)