Using a Sandisk USB flash drive. Windows recognizes drive, shows contents, everything seems fine, however, when copying from flash to hard drive, it halts and I get a message stating file is no longer on the flash do I want to continue or cancel. Sure enough when I cancel the operation and refresh, the drive shows files missing. When I reinsert the flash drive, I am able to see all files once again. I can start the copy process again but I get the same results. Has anyone else experienced this?I should add that I am running 64bit edition.

Have you tried another USB flash drive to see if the behavior is the same?

Thanks for your response. I have not tried another yet, I did get it to work by copying a few files at a time rather than the all on the drive.

Hi I have the same problem as you. I have also tried a Kingston Usb flash drive and a sony all with the same problem im also running the 64 bit version.