it would work upon start and would let me play but after a few crashes (see logs most likely from another mod crashing) it won't even start up anymore... NEI v.2.4.3.245... I disabled NEI and it started up just fine... Added mods to the game are Vienminer, Squeedometer, NEI, Optifine, and XRay (so sue me, it's only solo play.)
Log files not actually caused by NEI as far as I can see but is preventing the game from starting now...
crash-2020-03-24_10.51.44-server.txt
crash-2020-03-24_10.43.12-server.txt
latest.log

Update, reverting to v2.4.3.240 fixed the issue, whatever you did in the last update is what screwed it up...

You know what, if memory serves me, I think there's a compatibility issue with NEI and HWYLA... not sure if that was ever fixed but I just noticed it in the pack from stock... don't know why both HWYLA and WAILA are in the pack, they are essentially the same thing only something about HWYLA has issues with NEI... still testing, still no official crash logs generated... and I can't find the FML logs but regular logs are generated... I'll update you in a few if my game starts up, just deleted HWYLA.

Edit:
Nope, still crashing even with the version .240
Edit 2:
even removing the mod the game is crashing now so it might not be NEI after all...