Hi Fran,

My other PC runs on the same OS (Windows XP) abeit home vs Pro, and the Yamaha USB-MidiDriver version 2.09 works with it. For whatever reason, when installing 2.09 on my new PC (after having de-installed 2.14) it doesn't recognize the Tyros. Go figure. I wonder if might be some kind of software incompatibility glitch, especially because when I check the USB-Midi Driver in the Device Manager , that erroneous Logitech file (lvusbsta.sys) comes up as a listed driver for the Yamaha USB-Midi Driver. Weird huh?

Scott