"Longtext" MySQL data type fixes image upload issue
Thank you. I went and had a look at the PowerMessenger settings. The relevant field was set there to "longtext".
So I changed it to that value. And the image now saves quite satisfactorily.
However, I am still having trouble with the login side of things.
The supposedly "main" login page will not work. I keep having to use the draft one that is my "messround" "messround" page! Who knows what long-term horrors might have built up there. I will use SecurityAssist to rebuild the login page, from scratch, if you so advise. And I will then try to remember how we had varied it.