I placed down a ladder but it appears it cannot be interacted with. How do I make it so my players can climb it up to a platform above?

Nevermind. Apparently you have to generate another AI seeder at the top of the ladder.

Ha, was just going to ask. Yes, anytime you have two sections of terrain that are not able to be traversed contiguously, you need an AI seeder in each chunk.

Makes sense. Another mistake I made was putting the ladder backwards. lol, it resulted in Lohse doing a giant flip up it and falling back off. Simply rotating it around fixed the issue.

Still blown away by how powerful this editor is.