[NoggenFogger]

Ok, i've done some testing,

The only other addon I use is ElvUI, so I disabled that.
Carbonite and it's supporting Addon of Carbonite Items are the only thing I have running.


Here are my unofficial findings:

I use the Auto accept & Auto turn-in features of Carbonite (always have).


It appears that the phenomenon happens only when turning in a quest, not when accepting a quest. It also only happens when the quest giver has multiple quests to turn-in. It doesn't happen for example if the quest giver is also a vendor. The difference here is significant in that in each case, I have to manually click the quest to turn in out of a list, but in the quest giver/vendor case, even if there is more than one quest to turn in, I don't get the error; However I do get it if the quest giver is only a quest giver with multiple quests.


I'm not sure if this helps narrow anything down at all.


When I get a chance, I'll backup my addon folder and WTF folder and clear them out and reinstall Carbonite clean to see if there is something haywire in the data files or something.


Beyond that, I'm completely stumped.


-NF