Afternoon, after several days of work I finally managed to complete the Stave of the Ancients quest that involves killing the rare spawn demons.
When I went to turn in the quest last night, the NPC had a silver "?" above his head, and the continue button on his window was not clickable.
I thought it might be an addon issue, so I turned off all my addons, but this did not fix it.
At this point I noticed the quest was missing from my quest log, even though I had JUST confirmed that it was completed. So I could not turn in the quest, but I also could not abandon it, because it was not in my quest log.
I filed a ticket, and logged off for the night.
Unfortunately, the GM who responded this morning, did not take the time to read my ticket, and replied that "The ST class quests are currently not available in game, thanks".
I hearthed back to Ironforge and noticed that the quest had re-appeared in my quest log.
I ran BACK out to Felwood but was still not able to turn the quest in.
Screenshots - http://imgur.com/jpRYXDt,9sn3gXD
If this was any old quest, I would just abandon it and try again, however this quest took 4 days and a combined 30+ hours to complete, so I'm hesitant to abandon the quest without some kind of GM confirmation that it is safe to do so, or that I can be helped if something goes wrong.
Let me know what can be done, thanks.