Fortunately, I derive an enormous amount of job satisfaction from being able to come charging to the rescue because I am a Magic Data Wizard who knows all the Seekrit Esoteric Mysteries required to Make It Go.
Which is to say, today I got an email saying,
"THANK YOU A MILLION!!!!
Gosh! That fixed it! BOOM!
Thank you so much for assisting!"
and it made me really happy. :)