I have checked and re-checked to make sure I have the right quest, the combine box, and the right ingredients. I successfully finished the quest before. But when I click on the "Combine" button, it says "You cannot combine these items in this container type!" Any ideas?
When I said, " I successfully finished the quest before." what I meant was, I successfully finished the PREVIOUS griffon feeding quest.
One idea... there's two very similarly named items, 'Spider Egg' which is from Crescent Reach and not used in this quest, whereas 'Spider Eggs' (plural) is from Roost and is the correct item. Otherwise make sure you have the correct quest requested, and may as well make sure you're using the container from this task (not the first task) although I believe those are actually the same exact item ID.
http://everquest.allakhazam.com/db/quest.html?quest=3632 get new items from that zone only and try again if they don't combine then post the issue on the Bug post.
It was the spider eggs. I had some in my pack from Gorukar Mesa. When I replaced those with the ones harvested in Roost, it worked. Thanks!