I have a Death Knight and when I put Questing on it doesn't do anything- It never starts a quest or anything. (Just purchased the bot-may be doing something wrong. BGBuddy works, and Garrison works but Questing doesn't seem to.)
You need to run a profile for it but after the most recent update none of them seem to be working. The combat routines will automatically kick in if you get aggro or if you initiate an attack and if you have it set to do so, your character will automatically move and position. But the questing profiles will not initiate any kind of action. your character will stand there for all eternity and HB's info tab will say "moving to *whatever the objective is*". For my part I have run it on two entirely different computers, and uninstalled / re-installed on both. It's doing this on both of those systems so it's incredibly doubtful that it's an end-user issue. With so many hotfixes and patches in the last few days it's probably been difficult for the team to keep up. Hopefully it gets fixed soon.