Ok, well in some of the newest rev's i've seen none of the quests work... That can easily be fixed by just running up ascent, going into WoW, typeing " .quest load " it loads up every quest on your server and wala, there you are all quests fixed, im not sure if this runs 100% of all the quests on your server, but it will get the job done, When you restart your server there will be no need to retype .quest load anymore.
Enjoy