Bug Can't load FTB Crackpack with new launcher

Elias093

New Member
Apr 16, 2020
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When I'm trying to start/ load FTB Crackpack i get an error message when reaching the 3 step of loading the game.
Crach message:
The game crashed whilst there was a severe problem during mod loading that has caused the game to fail
Error: cpw.mods.fml.common.LoaderException:
java.lang.NoSuchMethodError: lib.enderwizards.sandstone.items.ItemToggleable.newItemStack()Lnet/minecraft/item/ItemStack;

Think it's related to the new launcher. I have re installed the modpack, I have enough RAM, I have the correct Java, and everything seems fine... exept that?
Anybody, help?

Thanks
/Elias