I have just reached neverwinter city and when I go to see Marshall Cormick, he does not offer me the chance to join the city watch. All he says is his commander needs to approve of me. I tried going to the merchant district to talk to this commander in her bulding but the door is locked and un-pick-able. Do I need to start the whole game over from the beingging or is there somewy to fix this?

Did you visit the Sunken Flagon after arriving to Neverwinter?

Sure did, but when I talked to Duncan, it immediately shot to the end of the conversation where he says 'thats pretty much it, talk to cormick or caleb'. There is no dialog leading up to that. I can ask him questions if I want to afterward, but all the dialog and the part where Sand comes in does not happen. Also, I can still do the caleb path if I want to, it progesses just fine. But I would like to do the city watch path.

Try reloading an earlier save if you have one. Maybe some script didn't launch properly. Apart from that I have no idea how to fix it.