Throws "Uncaught TypeError: Cannot read property 'handler' of undefined" exception handling certain events

[natevw]

This goes away if the fix in https://github.com/emberjs/ember.js/commit/aafb5eb5693dccf04dd0951385b4c6bb6db7ae46 is applied to your copied version of the code.

[patricksimpson]

I am having the same problem.