Me too. I ran a wipe unused disc on my laptop Then I plugged in a flashdrive. I started on a three-pass wipe, decided that was excessive so cancelled the procedure in the normal way. Then I either properly unplugged the flashdrive or just pulled it out. Trying it again I get the message other posters mention, and the flashdrive is flashing.
I don't have time for technical problemsclike this. I threw the new and good flashdrive away.