End game glitch issue

Just fought ravager and then I proceed to tell the portal I'm ready for the final battle...but alas, the damn portal disagrees with me and says I have tasks to complete. Obviously getting stuck right at the end of my very first entire play through is incredibly frustrating, any help is appreciated.
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I recall someone else who had a similar issue, but where they didn't complete Cyric's challenge. Can you please ensure that you re-visit all the challenge areas.
If that does not work, can you please upload a saved game?