I had the same problem as many of you with the game locking up after Barry shoots the 1st zombie. Hopefully, this workaround will help you:
1. Leave the DINING ROOM when Jill first enters with Barry.
2. When you go back in, try to exit again and Barry will make a comment.
3. Then walk up and talk to Barry.
4. Next, walk past the clock and a different cut-scene takes place
“If you want something you've never had You must be willing to do something you've never done.”