The Add/Edit button - in the userform, when you select an item from the list, and change one of the textboxes, and then press edit. If you go back to the spreadsheet, it was show #NA in column Q.
Unable to test. Get a message that certain items needed to run the codes are not present in this file and does not load the form.
Turns out Microsoft Windows Common Controls is missing from my machine. When I try to locate to load, it is not available to me. I will pass on assisting at this point and let someone else jump in as I am stymied.