Problem with Models

[Bastion14]

I try to load up a model or make a new one, and it does not show anything, just the tools to the right and thats it, no models.

Minecraft Works, and WorldPainter works, this runs but does not show the model. Help?

[Phoenix616]

Here is the stacktrace that probably corresponds with this error (at least it looks the same to me): https://gist.github.com/8f069fd1244bfdffc92ed6cad999c6f9

EDIT: Added the model file: tophat.zip