Well, JustJennifer, I think you should change your name to AmazingJennifer! The idea of trying it on another computer was a brilliant and safe solution to use as an experiment for the reset.
The yellow/comment button was not working on the old computer either, and since I copied the profile data from that old computer to the new computer when I got the new computer that makes sense. I tried it on the old computer in firefox's safe mode first and no luck. Then I took the big risk and did the reset.
After the reset was done the yellow box/comment button worked on the old computer. I then copied the "old firefox data" back into the new profile (following the steps that firefox told how to do at the bottom of the trouble shoot page), and when it asked if I wanted to copy and replace the files or skip them, I chose skip those files.
One by one I added back the old add ons, as they were now in the tabs requesting to be turned back on, checking each time to make sure the wordpress yellow box/comment button functioned. Each time it did. I did lose some stuff that I will point out shortly.
Ok, now to try it on the new computer. I did everything the same except this time I said, "copy and replace" instead of skip when copying the old firefox data into the new profile. That made it not work. So I went and put all the "old firefox data" back into the profile, so I would be starting where I began. Then I started all over with the reset procedure and followed the steps EXACTLY like I did on the old computer this time, which took an hour or so, but now both computers work with that button with no problem.
Here is what I lost in the process: I had to add back my specific persona as it went to default, and I had to reset my preferences/settings for my add ons as they to went to default, and I had to redo my customized toolbars, but all the other stuff (as far as I know) is still in tact.
If others have the same problem, they have an idea now of what to do, and what they can expect to have to tweak when it's done (preferences/settings in add ons, personas, and custom tool bars stuff), and everything else (if the old firefox data folder is copied with steps mentioned above) will be fine.
Thanks to all of you for helping me with this, and thanks for making me aware that my media library is not private, regardless if I have posted the pictures or not. That is good to know.
Happy St. Valentine's Day!