[The Magnus] Final Step Bug

[Komomo]

I'm unable to continue the quest beyond the "Follow the trail left by the abyssal cat and return to the Magnus" Step. When I talk to the cat, and make it back to the magnus nothing happens. I have tried restarting the quest, and my game several times. I'm unsure if this is related, but there is an inaccessible, second floating cat off to the side of the tree in the void rift in the quest area.