ok so i seem to be having the similar problem,
i bought a jb3 used and it only came with the power cord and usb cable (no install disc)
so i went to the nomad website and downloaded the most recent drivers (and installed without the jb3 connected) it seems that the drivers were installed successfully.
so then i tried d/l'ing the nomad explorer app. (which also seems to have installed successfully).
so now i hook up the usb cable to my jb3 (jb3 powers up on own) and click on the nomad icon. the program opens but say's device not connected...? hmmm.... so i go and download the next app. in line which happens to be 'Creative MediaSource Software Update version 2.03.29' , and i do see that it says "update version" ,so i'm thinking its not for me?? but i give her the ol' try anyway. so during the install process (3/4 of the way thru ) it tells me to make sure my device is connected, so i plug in the usb to the jb3 (jb3 powers up again) and click ok, (and i have also waited to see if just connecting makes the popup message go away) the next popup message i get says it cannot detect a device and installation will quit now?? i have tried different variations of having the jb3 hooked up and not hooked up when i try to install drivers and software.
do i need files from the original install disc too? can some one help me thru this one? i really hate computers for this very reason, (they always resist with me) by the way I'm running w/ Win XP
if that helps to troubleshoot.
thanks
jesse