As a workaround, changing the "%u" in f-spot-import.desktop to a "%f" fixes the import not showing anything, at least for importing from a mounted memory card - probably breaks other uses, but that'll do for me.
As a workaround, changing the "%u" in f-spot- import. desktop to a "%f" fixes the import not showing anything, at least for importing from a mounted memory card - probably breaks other uses, but that'll do for me.