Can't complete Black Pearl quest

[Cobbie Tigerpaw]

It only worked for me when I started my own crew instead of using someone else's and making sure I did the treasure chest thru the journal not the look out window.

[jackhut]

I finally completed the quest last night. I'm not sure what I did differently though. I was a gunner and got the Visit Jack Sparrow quest after dusting Goliath.

Thanks for all your help.