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Pack Version:
Dev: 46e178f

Description:
Crafting a "Soul Vial - Zombie" added via craft tweaker via auto crafting with AE2 auto crafting fails with the following:

[12:21:07] [Client thread/INFO] [minecraft/GuiNewChat]: [CHAT] Error: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: java.lang.IllegalStateException: Crafting Tree construction failed.

however when placing the items into the crafting table in AE2 either via JEI or manually placing the ingredients works fine and no error is given.

Expected Behavior:
Soul Vial - Zombie is crafted and no error is given.

Steps To Reproduce:

Crash Log:

Screenshots:

This is user error. You created a dependency loop with your crafting recipes, remove the empty soul vial from the output of the recipe where you use the Zombie Vial.

@smudgerox is correct. AE2 is looking for the ingredients for the vial, sees the recipe which outputs the vial, and gets stuck in a loop until it stops itself from spinning forever.

I generally advise for soul vials to set up a passive closed-loop for soul vials consisting of a powered spawner in capture mode and an adjacent soul binder. That way you can set up your patterns such that they have no knowledge of the soul vial at all.

That fixed it, thanks!