UO Architect - Can't extract existing buildings or create new ones

MikaC

Citizen
I have installed UO Architect, the server is running and I can connect the client. I can also place existing buildings that come with UO Architect. However, when I extract existing buildings and place them somewhere on the map, only the interior deco items are placed. Also, I can't create my own designs, because the editor button is inactive. How can I fix this?