Ok, I see why I wasn’t understanding.
When I double click the model I get this.
When I close jme and open it again I get the screenshot I was posting.
Sorry for the misdirection, I was trying to ask less questions.
I’m in Ubuntu, I didn’t mention it earlier since java is supposed to be platform independent and Netbeans is java.
So, try the other things mentioned in the troubleshooting section. If the window is grey like this then it failed to initialize.
Ok, so the problem was that it was using oracle’s sdk instead of sun’s.
Sorry to take so much of your time.
I honestly thought I had done all of the things on the documentation list.
Big thanks for the patience! 