That is sure interesting, as I snagged and deleted all the plist and prefs, I thought.
But the receipts, wow, never would have thought of that, nor would I have thought of deleting the QT instruction pdf files.
Was lucky to find Pacifist, seems lots of people had this same problem and was easily found by Googling QT troubles.
Might think that Apple could fix this, as when you install Adobe stuff or other stuff, this never happens, or at least Ive never come across similar problems with any other software.
I am saving these instructions and also the convoluted Canon wireless scanning with PS problems, so that if other people come across this, I will have the answers.
Thank you, and I know I always can get the answers here as usual, and save the info.
Jane