Change to Source does not get backed up to Target

[2spring]

Source folder is on an external Seagate GoFlex drive connected to my computer via CAT5e cable through a broadband router.
Target folder is on an external standard Seagate USB3 HDD connected to my computers USB3 port via a USB3 cable.
My wife's computer is also connected to the GoFlex drive using CAT5e cable and the same broadband router.
My wife has no difficulty accessing the Source folder, opening files and saving the changes. Her access and ability to work on files in the Source folder is the same as mine.

The ViceVersa Pro 2.5 program (build 2504) is loaded onto my computer.
Settings:
"Backup" is selected, mirror Source to Target.
"Ignore up to 2 seconds between files"
"Ignore size"

When I alter a file on the Source folder ViceVersa then updates the Target folder no problem.
When my wife alters a file in the Source folder ViceVersa fails to update the Target folder and the VV Launcher window shows the following error:
"Execution completed with file copy/delete errors"

When I force it to try again by clicking "Run Now!" it still fails to copy the newer file to the Target

Running "Show Comparison" shows that the file my wife worked on has not been copied to overwrite the file in the Target. No other files are shown by the "Show Comparison" utility because all the other files (all worked on on my computer) have been correctly backed up and match.

At the time of writing this forum post:

The file in the Source, after my wife altered it, is:
Size 16,282 Timestamp 12-03-2014 19:20:15

The file in the Target is:
Size 15,791 Timestamp: 10-03-2014 00:36:05

However if, after this failure, I then go in to the same file in the Source folder, make a change and save it (i.e. to the same file which ViceVersa failed to back up to the Target when my wife changed it) then ViceVersa promptly changes the file in the Target folder to match - no problem.


Please can you help?

By the way, If you could word your advice to suit my lowish level of understanding it would be a great help, thanks.

[2spring]

I have run this setup before (last year) with different computers and it worked fine. I've no idea why it isn't working now.

[TGRMN Software]

Hi , if you run a comparison manually from your wife's computer and then manually start the copy, does it fail? What error does it show? thanks
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