I too am having this problem on episode 4. It's unfortunate to see that TellTale has chosen not to respond to this issue on the game support forums. So far the only solution I have seen is something put forth by a community moderator, not a TTG employee - which is disconcerting, because apparently this issue has been happening for months?
Please address the problem TTG, I don't expect to pay for a product and then only be able to access 3/5ths of it.