Shahelion
Queen Bee
..The motherboard isn't even from Thorium. I can't see the issue, it's probably Tremor and Thorium conflicting. Please, read before you post.
I'm aware of this, but it wasn't an issue until I added the Thorium mod as well. The point is that both Crimson and Corruption items are available from mob drops and NPCs despite which one generated with the world.