This behavior occurs with both WSJT-X 1.9.1 and 2.0.0-rc3 OS X 10.11.6 El Capitan Yaesu FT-857D http://physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-1.9.1.html#MENUS The WSJT-X User Guide, section 10.1.3. Configuration Menu, states: "Simply Clonethe Defaultentry,Renameit as desired, and then make all desired settings for that configuration. These settings will be restored whenever you select that configuration." Unfortunately I am finding that after inputting the desired settings and testing CAT & PTT successfully ("Test CAT" button=green & "Test PTT" button triggers 857's red tx LED), the the new configuration's settings subsequently are not saved. Upon re-open the new configuration retains the original frequency and mode, for example. 1) Am I missing a step that saves configuration changes? In case they are corrupt, I have deleted the contents of /Library/Application Support/WSJT-X These are freshly regenerated on app launch. But this did not resolve the issue. 2) Does anyone know the location the WSJT-X Configuration files? Perhaps that directory should be deleted-refreshed or permissions checked with First Aid.