I drag a file that is visible on the Explorer Panel of a portable device (phone, which is attached via USV port to my pc) to my pc's desktop or other folder, but nothing happens. I can see the gray rectangle icon with the gray file name and the plus sign (for copy) move along as I drag, but when I release the mouse button, the file I'm trying to copy doesn't appear in the destination. OR if I try to move a file on portable device somewhere else on the portable device I get two error messages as in attachment.
When I do the same thing using Windows File Explorer (Win 8.1) it copies in either direction with no problem.