You have not selected a valid instance of WoW to attach to!
Please restart Honorbuddy and choose a valid instance of WoW to use Honorbuddy with!
This version of Honorbuddy only supports WoW Build #15595
You are currently on build #0
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Honorbuddy is up-to-date
I'm having the same problem as OP. HB was working fine up until 2 days ago for me, now that's all the comes up. I've tried reinstalling hb, and following the guide linked above me and it's done nothing. Any other suggestions?