@Calico Jack: Can you upload both the file in which Jack Sparrow's character is defined, and the file containing the quest code? Also upload "compile.log" and, if it exists, "error.log".
Using the same ID as an existing character won't cause the character to fail to appear, though the game might get confused and use the wrong character. There used to be two characters with ID "Gillian Atterbury":
Fixed - Two characters, one ID
They both showed up, one in Port Royale and the other on Cayman. But if you'd tried to write a quest involving the one in Port Royale, it would have been the Cayman one who appeared up in your quest.
Using the same ID as an existing character won't cause the character to fail to appear, though the game might get confused and use the wrong character. There used to be two characters with ID "Gillian Atterbury":
Fixed - Two characters, one ID
They both showed up, one in Port Royale and the other on Cayman. But if you'd tried to write a quest involving the one in Port Royale, it would have been the Cayman one who appeared up in your quest.