Ha! I thought I recognized the file. However, it was in a directory that was the backup dump from the old drive. So nothing actually wanted in the way of exe files.
That leaves the question as to why AVAST picked it out.
I loaded it last night after realizing that I'd downloaded an update for RealPlayer.
Just when everything was coming under control.
I'll have another bash at telling it where to look in the quiet of the night.