The quest right after that is a blocker anyways (The Assassin) because of an HB nav issue, so I'll likely just strip this quest out for the next stable release. Thanks for the update.
Edit: The quest is now disabled in 1.3.3. The below code should work, but I won't have time to test it for a while - if you're interested in testing, give this a shot:
Code:<CustomBehavior File="InteractWith" QuestId="27612" MobId="205876" NumOfTimes="1" CollectionDistance="10" ObjectType="Gameobject" X="1744.83" Y="-5455.76" Z="83.3624" />
i had the same problem.. that didnt seem to fix it.. now it doesnt throw an error, but it also doesnt click the portal