Just letting everyone know that I was playing the red dead single player today and ran across a glitch. Its on the mission "an appointed time" after you kill williamson when he gets out of the carriage nothing happens immediately. This is not a glitch! Your game has not frozen and you dont need to restart mission. Just wait it out for a minute or two because what happens is when you shoot him you dont let him finish talking therefore the game waits to move on in the story until he is finished talking so you just have to wait the time it would take for him to be done talking. I was worried at first when this happened and almost restarted the mission but then was relieved so I decided to post this in case anyone else panics and looks it up online like I did.haha