1) Where is the HRE button that's supposed to be on edge of the screen on the right hand side with the Papal influence button? I'm playing as the Teutonic Order and have several of my provinces in the HRE, but I don't see the icon/button anywhere...
The only report I've seen of this turned out to be that the HRE was disbanded. How it got disbanded is another question though. Anyone that sees this should post in the bug forum and upload a zipped savegame for analysis.I've heard of this bug before (assuming the HRE still exists and it hasn't been formed/disbanded); try starting a new game and seeing if the icon shows up.