I posted this issue yesterday and wanted to help others by posting an update.
I did some research and solved this issue. There was a discussion on a MacPorts defect: https://trac.macports.org/ticket/61699 Read the post for details. Michael Dickens pushed an update that corrected this issue. I was able to correct the issue by following the detective work by Fred Wright. Rebuilding gdk-pixbuf2 form source is the only solution. I carried this out by executing the following: $ sudo port upgrade -s --force gdk-pixbuf2 Following this I was able to run gnuradio. Stay healthy friends! Bill
