Spawned in a teleposer sigil in creative mode, bound it to myself, placed a teleposer block, right clicked the sigil on the block to link the two, moved a small distance away, used right-click to teleport, game crashed.

Crashlog once again: https://pastebin.com/hhQ7W6D2

I suppose this is to be expected from an item that has a big 'WIP' in the guide book page about it, and I did see a mention of a rewrite for the teleposer in the roadmap anyway.

• BloodMagic: 1.12.2-2.2.0-82
• Minecraft: 1.12.2
• Forge: 14.23.1.2611

:think: now what could have caused that....

Well, you're taking the onslaught of bug reports I'm throwing at you rather effectively, so good job with that. On a somewhat unrelated note, did you figure out what was going on with the alchemy arrays by any chance?