Phil,
I think the problem is that the File->Save (Ctrl+S) menu options takes precedence over what you write.
Try on key label ctrl+s, I think that takes precedence over the menu.
Hugo
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges