Ok. So, I’m certain that there should have been another way to do this, but I followed all of the previous posts and threads to the letter and couldn’t get things working. Finally, I just deleted all things Quicktime (not just the receipts), and reinstalled it. This eventually worked. So, there you go.
And P.S. though I may not have posted a lot on here, I am not a stranger to Creative Cow. I have found a lot of help that I needed by browsing these threads. However, on this last particular occasion, none of the answers or solutions posted were helpful for my situation. I guess that you, Jeremy G., not being a mindreader, had no way of knowing that, so I apologize for my douche-bagginess. I tend to lose all sense of common decency after 3 a.m. Sorry.