Unable to get past login screen

[robdodson]

Seeing this issue as soon as the app boots:

Exception caught during observer callback: TypeError: undefined is not a function
    at firebase-login.Polymer.locationChanged (http://localhost:3000/components/firebase-element/firebase-login.html:164:18)

[frankiefu]

I updated topeka-profile.html to use the new paper-button/paper-input usage. (googlearchive/topeka-elements@bf4283c). After that I could login to the app. I am also seeing the firebase exception but not sure if the exception is harmless or not.

[niko001]

I'm seeing the same exception. With @frankiefu's paper-button-fix (googlearchive/topeka-elements@bf4283c), signing in (using local storage) now works, but I can't get the leaderboard to populate, for example. This is regardless of whether I'm using polymer-topeka.firebaseio.com or my own Firebase-project URL (changed in topeka-datasource.html and topeka-leaderboard.html). I also have an open SO question regarding this with the full exception trace from Chrome and FF.