Why my CityEngine scene can't display shape and model, or draw shape?

Discussion created by alonezhby on Mar 15, 2014
Latest reply on Mar 27, 2014 by MBuehler-esristaff
I have a scene When I was working on it,  suddenly it was freezed, after few seconds the 3D viewport display a broken scene as the image shows. I just lost my work, both the model and shape....

And I upload a video to show the error:

Right now, even I use the CityEngine shape tool to draw a new shape In this scene, I can't get it or see it.

How to fix the scene, or solve this error?