>>Does the HiMD appear in your Device Manager at all? Possibly with some sort of exclamation point or question mark? Yeah it appears in the Device Manager when connected but with the yellow exclamation mark. >>If so, you may want to try uninstalling the unit through the device manager before installing the PA Driver. Have tried this and everytime when you connect again it installs the drivers and comes up with the same error message. >>Also be sure that the unit is disconnected when you install the drivers. Yeah have been doing this as well. >>Oddly enough it sounds like it's trying to install drivers that weren't designed/tested for XP... Is that possible? Yes I agree with you, the drivers aren't digitally signed but that should not make a difference. I used to have an older MD player which I used with earlier versions of sonic stage but I uninstalled all the software as per the instructions on this forum before installing the latest version of Sonic Stage. I think there is still something conflicting .... maybe rements of the older driver, but I can't test on another machine as the monitor for my desktop isn't working else I would install and test on there.