I'm having a big problem. When I use World Model in authoring tools, the pictures don't show up (to show what model i'm viewing). I also tried to use model viewer, and when I clicked on a folder it says it doesn't have any models. I can put the models into levels when I create them, however I am unable to see the model picture while in World Model mode. Does anyone know how I can fix this?

Maybe it has something to do with them being mdl files.