I assumed it was an actual error, instead of a warning, because the script then seemed to not do anything. I was sort of thinking it had something to do with the fact I was running it on a Win2K machine. I tried every variable of directory naming convention that I can think of, but got no joy with any of them.
I suppose I could try it in Cygwin to see if I get the same results.
I'll let you know.
Update: I thought it synchronized the directories in either direction, but it seems to have just created the source directory in the target directory and moved the files.
Still cool, but not quite what I was hoping for.