@import in <template> tag throwing error

[Gbeschbacher]

Hey, i just tried the following snippet from the styleguide:

<polymer-element ...>

<style>@import "my-element.css";</style>
...

and i just couldn't get an external stylesheet loading; following error occurs:
Uncaught TypeError: Cannot call method 'cacheStyles' of undefined styles.js:38

Am i doing something wrong here? I was searching for a while what the error on my side could be but i just can't figure it out - i am thankful of any kind of help.

Cheers, Gbeschbacher

[dfreedm]

Answered your stackoverflow question: http://stackoverflow.com/a/22360277/3303267

This is because of Polymer/polymer#440 (comment)

If you run the commands I posted in StackOverflow, it should clear the bower cache and you won't have that crazy error.