Mike,
Thanks for this very useful addition, I love the way it is so easy to use and all the folder structures in a directory are copied across, including zip folders. I am behind in updating my network HDD that stores duplicates of images so this will make the task very easy.  

I had a few errors reported in one update I tried so it would be nice to be given some clue as to where these emanated from.

The On-Off buttons for source are a valuable addition too. There are occasions when it would be useful for the On-Off to be selective in terms of the Source type to be copied. Eg. I don't always need to copy "Photos" or "Raw" types, I just want to backup "Other" qrs & flt files. When the are several lines of Source folders, it's tedious to do it manually.

Just a couple of suggestions   but it's pretty good as it is!
Terry.
PS. The ability to remove a source row would be handy too!

Thanks Fred. I was thinking of the following scenario where quickly eliminating whole row(s) would be an advantage:

I have a "My Pictures" directory on my main HDD; this contains my DSLR images in a series of date based folders.
However there are a number of other folders in My Pictures that are much less important and are not replicated on the backup HDD.
The DSLR folders are replicated on my backup HDD in a "Pictures" directory; they are created when I first copy a new set of images from a flash card.

I would like to update all my DSLR folders on the backup HDD in one go; I can select as the source "My Pictures" but that also includes those folders I don't need to back up and are represented by multiple source rows.
I could do with a quick way of eliminating those non-DSLR folders from the source.
Hope that explains it.
Currently, I'm going down a level in My Pictures and then doing the update process; this has to be repeated several times.
Am I nit picking?  :-\
Terry

Terry,

Not sure if you realize this, but it only takes two clicks with a little scrolling to eliminate an entire folder (and subfolders).  If you have this structure for example:

c:\mypics
c:\mypics\one
c:\mypics\two
c:\mypics\three
c:\photos
c:\photos\one
...

Just go to the c:\mypics row and click on the "Photos" cell in that row.  Then go to the c:\mypics\three (last "mypics" subfolder) and hold the shift key and click the "Other" cell in that row.  That will turn off the entire c:\mypics folder and all subfolders with just a couple clicks.

Mike