Unexpected token < AND Define is not defined

Two weeks ago my Ember application was working. I got back into it today and before making any further changes, I ran "Ember Server". I got this two errors:

Uncaught SyntaxError: Unexpected token <
application.js:1Uncaught ReferenceError: define is not defined

I'm at lost on how to fix this. Any hint on how to approach this issue would be appreciated.

I'm using ember-cli 0.2.3. Node is 0.12.2.