i can get this to work on a laptop running vista, but not on my desktop running XP.  So it would appear the TF is okay (sn 06846).  it shows up in the XP devices menu as a USB audio device at location 0.  

In the update utility it says no midi input devices available and does not detect the TF.  I've done some searches on here but haven't had luck with any solutions.  Any ideas to help would be appreciated.

Thanks