That's true, Drac, but if someone has never encountered a particular problem they'll most likely try methods that have worked on other problems.
The big clue in my case was in disabling all add-ons and then being able to upload photos. And, being able to use a different browser to upload photos. Looking at the entire system, in this case, WAS a waste of time. Had I not tried finding something similar on the web I wouldn't have run across the "footnote" on one of the pages I checked.
Anytime someone helps troubleshoot computer problems they need to make sure they understand the problem. Which means the one with the problem must make sure to communicate as clearly as possible the extent of the problem, and anything they may have tried.
And one other thing, if a person doesn't know beans about what's being asked, it's best to either say so or remain quiet. Half baked ideas can become very confusing.
Thank you, Cathy. Sometimes the simple fixes can be the hardest to find.
If something gets your goat, it just proves you have a goat to get.