I get the same error message, also when re-ripping a cd that was only partly ripped (as I closed the lid of my laptop).
I tried setting the preferred format to something else than the mp3 I normally use and noticed that the entire mp3 option was now missing from the dropdown! Yeah, that "Unable to locate encoding profile for mime-type" error message makes sense if the entire mp3 mime-type is somehow gone/crashed/whatever.
I get the same error message, also when re-ripping a cd that was only partly ripped (as I closed the lid of my laptop).
I tried setting the preferred format to something else than the mp3 I normally use and noticed that the entire mp3 option was now missing from the dropdown! Yeah, that "Unable to locate encoding profile for mime-type" error message makes sense if the entire mp3 mime-type is somehow gone/crashed/ whatever.