FX-Viewer tells me that it is missing XQuartz
13/11/15 13:20 Filed in: FX-Viewer
If you are using a Mac with OS X 10.7 or greater, you will have to install XQuartz-2.7.4 or greater, you can find that at http://xquartz.macosforge.org/. According to the XQuartz documents, you will need to log off your computers user account and log back in after installing XQuartz