here do this:
1. type [admin
2. click on ADMINISTER on the tope left hand corner.
3. Pick world building on the top right hand corner.
4. hit the rebuild categorization button.
5. do a [save & reboot your server.
6. Go back into the world building menu and click the teleporters, doors, moongates, decoration, and signs.
7. load in my megaspawner files.
8. [save and have fun