У вашего броузера проблема в совместимости с HTML5
In this video Felix Joleanes, lead developer of SmartRefs, will show you how to use Proxy Scenes. With SmartRefs you can have proxies of whole scenes, instead of just objects, and that gives you the ability to work even better with lighter scenes in the viewport.
Watch the next video of this series in the following link, where you can see how you can persist references with SmartRefs:
https://www.youtube.com/watch?v=FNUvTKoZXEU
Or visit SmartRefs website to know more:
http://www.smartrefs.com