Board Thread:General Discussion/@comment-24838955-20140519234724/@comment-24838955-20140520061205

Freenight wrote: Try replacing the Sky Mill, I think NPCs need more floor space than that. Also might have something to do with you just putting one solid block as part of the floor. I'll try to reproduce your room and see

Edit: Alright, you need more solid blocks as part of your floor. Apparently you need at least 3 solid blocks as part of your floor for it to be considered valid.

Here's a reproduction of your house that meets the requirement:

Thanks I replaced some of the platforms with real blocks and it works.