V 1.31 works perfectly with my 07 ML 350 (Comand) and my HTC Touch (WM 6) running on AT&T.
For the first time I now have my contacts, recent calls, and recently received. A nice touch is being able to create a new catagory in Outlook (in my case "Bluetooth"), assign this catagory to the group of contacts I want downloaded on starting the car. This minimizes the communications time and de-clutters the number of contacts displayed on the Comand interface (in my case I do not want 2,600 contacts to pick through).
Nice work ... I registered!