Because of on going issues with the Simulate screen crashing on OSX, I have resorted to using XDK under Windows (Aaargh). I have just copied a project to create a new version.
This issue is under investigation and appears to only affect Mac users. Current theory is that it is due to some problems during upgrade.
I'm getting error when build my android app using cordova 5.4.1
Previously I have renamed the project folder, XDK and XDKE files, then edited the projectGUID to all zero's in order to create a new copy of the project.