When I search for a file with type "archives", "pictures", "videos" or "programs", there are no results. However if I do the same search with type "any" there are results with type "archive", "picture", "video" or "program".
I think the bug is the final "s" in the combo box.
"Audio" works, and "CD-Images" works too, because the type of those files is "CD-Images" too.
I'm spanish. Sorry for my bad english.