I only have a Mac so VMWare is a must. I tried chkdsk on all relevant drives and still I was having the same issue. I got a message: "unknown error occurred while accessing E:\CurrentSetup.xml"
Also, even when the PHTDTA finally mounts, I can't actually open any of the files on it. I think something may be messed up with the partition. When I plug in my other DMS drive (I have 2), it pops right up and Media Manager works fine.
Notably, it still works fine in the car.
I think this DMS may be doomed for windows use so I am gonna try PhatMac real quick and if doesn't work, I will reformat and start at the top.