Hotfix for r227.
It sounds like a problem with the addon. The addon developer will need to address it. We posted a compatibility update for addon developers.
Black screen with Photon addon too... :-/
Uncaught TypeError: Cannot use 'in' operator to search for 'Object' in undefined at Object.$jscomp.polyfill
It seems that this is related to the fact that the "in" operator is used on text and not on an object.