Unfortunately, I am unable to debug the issue with your RSS buttons as you have disabled them.
As for the upgrade procedures, if you have upgraded from 1.3.x or 1.5.x, please note that most of the settings have been revamped. Since the 1.6.x branch, a proper upgrade mechanism has been included as well, allowing us to include upgrade profiles for any future upgrades. In other words, this should not be an issue anymore from now on.