Should Magic Bullet be included in the above list and, if yes, where?
I would start with uninstalling Magic Bullet
A related question: Many posts suggest installing Liquid 7.2 over itself to see if that works prior to performing a complete uninstall/reinstall. In that process are all four programs installed over themselves or just the Liquid program?
It is usually only Liquid that needs to be installed over itself, depends, of course, on if the other apps are working well after the reinstall.