I have a series of batch files to copy data to and fro between hard disk and flash stick. They have operated successfully for a couple of years from icons on the desktop with no probelms.
I now have a second flash stick that I use for another job and used Notepad to amend the original batch files to suit the second situation.
However the second batch files won't run from shortcut or from Windows Explorer. All I get is an hourglass for about half a second and nothing else.
The batch file runs fine from the command prompt.
Even more puzzling is that if I take the original batch file that runs fine and make a copy of it using Windows Explorer then the copy won't run either.
The original batch file is attached (as a text file)

Any help would be greatly appreciated.