I understand your frustration, but this has been an issue for a while now, and is out of Scirra's hands for the time being. CocoonJS was updated which appears to have caused some errors.
I'm sure the team are working as hard as they can to make sure things are smooth. For now, you'll either have to switch to the older physics engine with Cocoon, or just wait a little longer.
I've been waiting for this for approximately 3 months... but it's given me a lot of time to polish up my game.
Sorry I couldn't be more help.[/QUOTE]
How do you switch back to "OLDER PHYSICS ENGINE with cocoon"
Would appreciate your input. Thanks