I had to uninstall and remove every bit of Firefox because of the annoying Jetpack add on that had embedded itself in my browser. Since reinstalling FF 50.1.0, there are certain toolbar buttons that I can no longer load, one of them being the Amazon Wish List button. What I get is a flashing yellow address bar, but no other window opens (my popup blocker is OFF) and I get the attached message when I try to install the Wish List button. DON'T TELL ME it's an Amazon thing because everything I've tried reverts me right back to Firefox Add Ons!

It's very annoying because all of this worked just fine before I reinstalled this new version of FF. How do I fix this???