Dimension causes forge to crash while loading

Issue description

i have made quite a large mod, when I added a new dimension the game just wouldn't start up anymore, when I removed the dimension it worked again, I tried to make dimension with default blocks and biomes after that but it still crashes.

Issue comments

Does the crash happen in MCreator's test Minecraft client or in actual Minecraft only?

Mcreator doesn't give me any errors and seems to work just fine, when I load Minecraft it crashes during mod loading
I have more mods installed but these mods shouldn't conflict with my creation.

Could you attach the .jar file of the mod to the ticket too? Thanks!

Done, also it crashes at leading/initializing mods phase 2 specifficaly

*loading*

This is another bug and was already discussed and we work on fixing this bug in 1.8.1. Regarding dimensions, I will check and report back.

thanks for looking at the problem so quickly, a lot of platforms have support that takes a year to become active
but you came around in less than 5 minutes

I have loaded your mod and it worked. You are not using the right version of Minecraft Forge. MCreator 1.8.0 is made to work with Minecraft Forge 2705, so make sure you use this version.