unable to read font during ImageMagick/RMagick installation

I was installing Rmagick earlier on OSX and ran into a little hiccup, during the installation I recieved the following error:

unable to read font `/System/Library/Fonts/Times.dfont’

After about 30 minutes of digging, I found the solution! Open up Font Book and remove any duplicate fonts; duplicate fonts have a small black dot next to their names.