Ken,
Make sure the thumb drive is formatted to FAT--not FAT32. The keyboard will only read FAT format, but the computer will read both.
Gary
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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)