Please update for f20+? Thanks.
gnuradio-3.7.2.1-4.fc20,uhd-3.6.2-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/gnuradio-3.7.2.1-4.fc20,uhd-3.6.2-1.fc20
gnuradio-3.7.2.1-4.fc20, uhd-3.6.2-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.