Here's what I had to do, I had to restore my system font and delete the Font Changer application from within the application itself. Do Not delete Font Changer from Settings >Applications. It must be from inside the application itself.The update was recognizing I had changed my system font and was failing. I then tried the update and it loaded successfully. I used Pete's Roots Tools to un-root my device and then Re-root and all is well. I have full Root access.