Unidentified Developer Error (Mac users)

This error is not very common, but there's an extremely easy fix for this.

Instructions:

1) Go to System Preferences (Click the Apple logo on top left of the screen),

2) Click Security & Privacy (a home'ish icon),

3) Undo the lock at the bottom of the window so that you would access the complete menu (It may ask you for a password);

4) Under "Allow apps downloaded from:", check Anywhere.