#2 - March 29, 2007, 2:07 a.m.
Apparently you had logged out already.
The issue with Vaelan and the Seal of Ascension is a known one and we hope to have a resolution to it added in a future patch. Unfortunately right now I can only present you with a work around for the issue.
Basically what is happening is when the instance resets Vaelan will forget that he has ever spoken to you. In order to get around this you will need to acquire another Unadorned Seal of Ascension. Once you have the Unadorned Seal of Ascension speak with Vaelan, he will examine your Unadorned Seal of Ascension and continue his dialog as if you had never been there before.
Once he runs through his starting dialog he will offer you the quest that you should be on, since you have already completed the first Seal of Ascension quest he will give you the second one as well as Vaelan's Gift which will have the Unfired Seal of Ascension and the Orb of Draconic Energy in it.
Complete the quest and return to him, again if you had left the instance long enough for it to reset you will need to speak with him while a Unadorned Seal of Ascension is in your inventory.
I am very sorry for the frustration this has caused you, good luck with Emberstrife.