Which Mac OS X you have? I saw the same today, menus in Russian language.I expect that VLC will get some kind of patch very soon, unless the issue is simply a beta bug.
Same problem here. Completely uninstalled and reinstalled but everything is in Russian. Might be an El Capitan thing since that is what I am running. Hoping they fix this issue. Happens on both my Macs so not an issue on my computer side