Hi! I just updated to 1.5.1 from 1.5.0 and freeze up when entering a world. Part of the error reads:

[16:19:14] [Render thread/ERROR]: Exception caught during firing event: Cannot invoke "net.cyber_rat.extra_compat.core.CompatCore.addCreative(net.minecraftforge.event.BuildCreativeModeTabContentsEvent)" because "compatCore" is null
	Index: 1

Here is my full latest.log: https://gist.github.com/katubug/78e8ab65086708c74fb06acecfc0649c

I'm getting the same error. It seems like it only happens when I open the creative inventory, from my testing.

https://gist.github.com/yurei-dll/4d2b02d197b6b2d4a2f9651d836e4c26

same issue

we are aware the newest version has many issues and are working on a fix please use an older version of the mod

Should be fixed in 1.5.3 make sure you are using Temporal Api 1.6.6