Quoted from Crewey:Thanks again for your help phishrace I've now tried other USB thumb drives I have, formatted them as FAT32 but are not even being recognised when inserted. I'm assuming that is because they are 3.0 whereas the 1gb previously was not. I will see if I can dig out a different 1.1 or 2.0. Thanks
Make sure everything is erased from the USB. No added #, letters, or file names. I use a pnk brand usb without problem.