We recently discovered an issue with Match to One Album that can cause it to hang, if you have encountered this issue it is now fixed in this release, we have also added a scripter task that can be used to add Genre of Classical to all your albums identified as Classical but without a Genre.
Improvement
SONGKONG-1395 Automatically set Genre to Classical if identified as IsClassical
Bug
SONGKONG-2666 Match One Album sometimes hanging after selecting Album