1: It should not affect a saved game. Apart from starting a new game (several times) to check that I can now beat the warden to death without the guards attacking prematurely, I have a longer game in progress which still works.
2: Yes, I've sometimes noticed that as well. I've no idea why it happens. It does seem only to happen to the Armed Tartane, and then only once. So before using the telescope, I save game, use the telescope, start PoTC after the CTD and reload the saved game, and after that the telescope works. Alternatively, just go to Santiago on the worldmap. There's no particular reason to direct-sail the whole way except to earn XP for sailing, and you can't defend yourself if you're attacked by random pirates or French ships because this "Armed" tartane is unarmed.
3: If you talk to someone, watch the on-screen message carefully. Sometimes it says "This meeting has really enlightened you..." The person has said something semi-useful and you gained a few XP. And sometimes it says "This meeting has really lightened you..." The person has just walked off with some of your money. If you notice this, and if you find the person in question, you can talk again. Various things might happen and you might get your money back. Or the thief might just laugh in your face. That's when you pull out the sandbag, hit him over the head, and rob him back. In the newest update, not only does this not cost you reputation any more, you get a different dialog to show that you're getting your revenge.
2: Yes, I've sometimes noticed that as well. I've no idea why it happens. It does seem only to happen to the Armed Tartane, and then only once. So before using the telescope, I save game, use the telescope, start PoTC after the CTD and reload the saved game, and after that the telescope works. Alternatively, just go to Santiago on the worldmap. There's no particular reason to direct-sail the whole way except to earn XP for sailing, and you can't defend yourself if you're attacked by random pirates or French ships because this "Armed" tartane is unarmed.
3: If you talk to someone, watch the on-screen message carefully. Sometimes it says "This meeting has really enlightened you..." The person has said something semi-useful and you gained a few XP. And sometimes it says "This meeting has really lightened you..." The person has just walked off with some of your money. If you notice this, and if you find the person in question, you can talk again. Various things might happen and you might get your money back. Or the thief might just laugh in your face. That's when you pull out the sandbag, hit him over the head, and rob him back. In the newest update, not only does this not cost you reputation any more, you get a different dialog to show that you're getting your revenge.