Alright - if you download 1.13, in settings turn on "Debug..." - run the game and when it stops, open the home button, click the text field on the bottom - it should copy debugging information which you can then paste the output here - it will hopefully guide me to what the problem is :)
Keep in mind this only works with the Windows/purchased version right now (can't use ctrl+c with Unity's web build apparently :( ) The Browser demo should allow you to do this as well, but you'll need click the text box, then in the pop-up right click the text "select all" then right click "copy" and paste here.