My team has made it through the two levels of the final dungeon an seen and talked to Kra'an (and fought a demon he summoned). According to the walkthrough we are now supposed to go back to Helix, who will open a special gate to take us to the other side of the dragon to retrieve the gem we need to complete the sword. But all Helix says when the team visits him is, "Hurry, defeat Kra'an". I have tried this twice. What am I missing?

Bert