Wtih the advent of Beta 14, I used Scrivener’s uninstaller to uninstall Beta 13, and while it removed the US English dictionary, I’d also loaded (from within Scrivener) an Arabic and a Hebrew dictionary that it did NOT remove.
It may have become confused, as I have a couple of other directories (custom dictionaries) in the hunspell/dicts/ directory. Still, Scrivener only recognizes its own installations, so it should have recognized the other two as Scrivener-installed dictionaries. Maybe they’re not in the uninstaller’s list of stuff to remove?