I've created a small worldspace and connected it to the Wasteland. Everything appears OK, the navmeshes in both the worldspace and the wasteland cell containing the teleport appear OK, the green triangles are present to indicate the navmeshes know about the door. However, followers will not follow me into the new worldspace. In fact, they disappear altogether.

This is the first time I've played around with worldspaces, so I've probably done something stupid. Anyone have any idea what it might be?

It's not you, I had the same issue until I turned my mod into an .esm. Run FO3 edit master update, if this fixes your issue then you know you'll need to convert to an .esm before you release.

Thank you! That solved the problem. :foodndrink:

Ugh! This game! :rolleyes: