Importing a model with a single vertex crashes editor

[Lizband]

Issue: When adding a 3D model that only contains a single vertex, the editor throws the following error and crashes. The model must be removed from the project directory before attempting to reload.

Expected result: The editor would add an actor model with no mesh (Like an empty in Blender or Unity), or would not import the model and throw a warning to the console.

[deadcast2]

Would it be helpful to just have like an empty actor that could be added to the scene without the need of a model being attached?

[Lizband]

Yep, that would be awesome!