Been there done that.
I tried this program about 2 weeks ago - it doesn't work. Something with the IMG file that Microsoft creates. I get an error, "Error, cannot create vdisk.". No error logs or any other information is available. Dunno why this IMG file is any different - but it is. My question really is WHY did Microsoft have to change formats and what about this change is not allowing it to be converted (short of burning it to a DVD, then re-ripping it as an ISO).