Im stuck at the end of Chapter 4. I'm at 87% for "there's always a plant" and 100% for everything else. I've read through the walkthroughs and it appears I've done EVERYTHING. NO cutscene when I exit to the St. Edmund Hall Quad. What is going on? Is it a glitch? Does anyone have a save that's JUST BEFORE the end-of-chapter cutscene? This is getting really frustrating!