Uncaught NotSupportedError: Failed to execute 'registerElement' on 'Document': Registration failed for type 'dom-module'. A type with that name is already registered.

[Ramkrishan Bhatt]

HI,

 I have upgraded the code from .04 to Polymer 1.3 in my project. And also remove all java script code from Index.html. But still i am getting error to registering my element. I need to fix these issue asap as beta version of Polymer working fine with but after upgrading i got stuck.

 

[Eric Bidelman]

This happens when you load polymer multiple times from different URLs or vulcanize polymer.html into multiple bundles, then load each.

For the first, make sure polymer is being loaded from the same place across your entire app. We call this the canonical URL.

Follow Polymer on Google+: plus.google.com/107187849809354688692
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