Strange problem with model editor

[Your Computer]

Just a room, I have some experience with modeling in Blender, so I'm pretty sure the model itself is fine, it might just be an export error. Hopefully the above workaround will fix this, I'll be back in a few minutes.

If it's just a room, then you don't need to import it into the model editor (unless you want the room to have interactive properties that entities are capable of).

Random thought: lol, a room of type grunt.