Messages app showing unread number after deleted message. Can remove/reset? Just what the title says, I deleted a group message in Messages, but it's still showing the unread number from that thread (see screenshot) and I can't bring up the group message because I deleted it.

Short of having someone text in that group again to make it reappear, anyone know how I can fully delete the thread, or clear the unread number?
Two options:


Close Messages.app, then in the Terminal killall Dock. This worked for me.
Identify the message that Messages believes is unread (hover over icon in Dock) and delete it on your iDevice(s).


From here: http://forums.macrumors.com/threads/unread-messages-badge-on-mbp-is-stuck.1806575/

Also, this seems to be a duplicate of Why does Messages on OSX always show unread messages?