Found the trick to fix the problem (quite by chance, I might add). In the last rennewcommand line I changed the 0em to -1em and that eliminated the extra blank page before the title page.
I am using Beamer (Dresden theme) and wanted to remove from the title slide header and footer text but leave the color bars in place. I found a solution in this forum but it has created a new problem. An extra blank frame now precedes the title slide. If I comment-out the line "\renewcommand*\dohead ...