Try connecting the Fuze+ in MTP mode, in fact, manually select MTP on the device prior to connecting.
Go to the Device manager in Windows 7, and try uninstalling the device. By doing this, you accomplish a refreshing of the _registry entry for the Fuze+ . _ Unplug, wait 30 seconds for good measure (allow the Fuze+ to refresh if any transfers were made), then plug in again.
Windows will make a new registry entry for the Fuze+. I just had a thought- there may have been a “ghost entry” there, Windows refers to the registry as a cheat sheet telling it what to do with the device. If there’s a problem with the adaptation, Windows will ignore the device, making it look like the device isn’t there at all. This could be the case with your mounted card.
You should be greeted with the mask “New device found. MTP device.”
Let me know if this solves the bizarre enumeration issue for you.
Bob 
