Excel "No permission to save files" error message
A relation received the following error message when trying to save an Excel file under a new name:
"You do not have permission to save files to this location. Make sure that you have write access for this location, or select a different location"
This problem has come up previously in an archived question, and may well have to do with permissions in certain cicumstances. But in this case it had nothing whatever to do with permissions (I solved it), so I thought I would post it here, and then answer it for the benefit of others.
iMac 27″, macOS 10.13