I found a workaround for it, I went midway into the quest then just went onto my ship and sailed away. But I've found some other bugs as well if it's any help.
When I sailed back to Jamaica with the french boat for Silehand or whoever, I think if it's night then the quest automatically goes to the town hall, but because it's night no one's there so you're left there unable to do anything.
There's a priest who can't load his dialog, then a french priest who when I talk to him, asks me about a quest which I haven't started yet.
At the start of where I have to find Raoul Rheims, I talk to the bartender and then leave, I'm stuck outside because someone is meant to talk to me, but they don't show up.
I'm not sure if the prisoners are meant to have dialog but it doesn't load for them if they do anyway.
And one more thing, this mod is just too good, it's great to see it's still going after all these years and for so long, everyone involved is doing a great job and I am amazed to see how far it has come. I know you already know but great job anyway and I look forward to the builds to come.