Polymer Version Not Working

[geekkid1]

I was told (perhaps wrongly) that the Polymer version of the globe was stable. When I run it, I get three errors and a black screen. Even when running it from python -m http.server 8080's localhost:8080. I get errors about "iterator h" from events.js line 176, errors about reading a property 'DELEGATES' of an undefined object from events.js line 15, and errors at multiple points in polymer-element.js about the getDelegates( ) function not existing. I'm sure these are all related, and if I'm reading what I have right, fixing the problem with "iterator h" might fix the entire thing. But I don't know how to fix the problem, and I'm kind of afraid I'll break it further if I try.

(FYI none of the files have been altered from the state in which I downloaded them).