Hey, within the last 12 hours, my honorbuddy and Wow have been both just shutting down at the same time. Here is my most recent log.
Blizz currently has problems with the login servers that lead to disconnects and login problems. If WoW closes hb also closes. You can't really fix this but if you wish to continue afk botting you can use a relogger that starts both WoW and hb again after a crash. HBRelog is a good one e.g.. Btw: Undead mage is a good choice dude *thumbsup*
It may have been the buddy auth servers kicking you from program use due to bandwidth or other issues. But that could cause the problem you described, if it was on the auth server then you won't see an update.