HELP - T8 Suddenly won't let me save edits. Save me please!

[Mr Coffeehouse]

When I try to save changes to an edit I am working on, T8 now says in a small window: "Save edit Unable to save edit '______' " (<-- location of edit file)

And offers two buttons: "Carry on anyway" and "cancel"

There was a Windows 10 Notification just before this happened that I didn't allow for some change to my system, but I don't remember what it asked to change or allow.

Does anyone know how to rectify this situation?

Thanks, Michael at The Coffeehouse

[Peter Widdicombe]

Permissions or drive destination not available (i.e. an external USB drive is full ?)