Can't save model with collider as NONE

[SpiderPig]

1. Open up any model in the model editor.
2. Navigate to the Model tab and select the model in the tree view.
3. Change the collider to anything other than NONE.
4. Now change the collider back to NONE.
5. Close the model editor and click save.
6. The model editor will not close and the top menu bar has disappeared.

[Josh]

Fixed for next build.