I tried it on several Windows 2000 machines and two other Windows XP machines and it worked on all of them, so I concluded that it had something to do with computer rather than my hopes that it was just a faulty flash drive that I could exchange to solve the problem.
I tried clicking the message but the troubleshooting assistance was of no help (come to think of it, I can’t remember a time when it’s ever been helpful). For assistance in solving this problem, click this message.” The contents of the error message in the little message balloon says, “One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it. I tried it on another machine running Linux and it worked fine, but nearly every time I tried copying that directory on the first Windows XP machine it would get about halfway through and then produce the error. I bought a 512MB SanDisk Titanium Cruzer and whenever I tried copying a directory of about 300 files (about 140MB) it would give the following error (click on it for a larger version).