there seems to be some imcompatibilleties between Nuclearcraft and UMC: my modpack starts fine without Nuclearcraft, but does not with it. I need UMC for IR and LOS (land of signals) The pack runs in mc version 1.12.2 and uses the recommendet forge version. it always crashes in phase 3 of the loading. I hope thats enough information, if not, please contact me

the crash report:
crash-2023-05-07_13.48.32-client.txt

Your game crashed because of an "OutOfMemoryError" error. This means that you probably did not allocate enough RAM to your game. Currently you have 4 GB allocated to the game, if you have more I recommend you increase this to e.g. 8 GB and try again.

If you don't know how to do this, there are a lot of instructions on the internet for different launchers, depending on which one you use.

I did that before (6G) and it didnt work, java just crashed instantly

edit: nevermind, doing it again somehow fixed it, Thank you!

FYI This usually happens while UniversalModCore/ImmersiveRailroading is caching everything.
If you get that issue, it'll still try to cache the rest.
Models cached will not take much RAM, so you usually get further every time.
Once the cache is (almost) completed the crash most likely will not occur again.
Thats the experience I made with it.