https://bugzilla.redhat.com/show_bug.cgi?id=1060216
--- Comment #2 from Jon Ciesla limburgher@gmail.com --- Yes, in fact I discovered that the hard way, after opening it to nothing, and trying to import from the old settings in ~/gpodder-downloads. :)
Just remove ~/gPodder and run usr/bin/gpodder-migrate2tres.