You should be using Google Analytics to log your startup's client-side errors
I tried Airbrake yesterday and it wasn't that helpful. I had to turn it off quickly as I was inundated with errors.<p>You can see from your screenshot that you're getting Script Error at line 0. A number of other errors pop up that I couldn't quite figure out.<p>For instance, when the variable 'google' isn't found it's because the google javascript never loaded. But, how many browsers are rejecting the google maps javascript?