Error 100:70 is usually displayed during initial setup when the box has not yet received its entitlement for Live TV and should resolve within a few minutes.
On occasions it needs a VM agent to update their systems with the 360 serial number.
Did you already have a 2nd VM TV box in that location, ie a Tivo? If not then you may not have a VM coaxial connection in that room which is needed for live TV.
If you did already have a working box there then check that the co-axial cable to the malfunctioning mini box is snug and secure. Also that it has an internet connection.
You could try swapping the box around with the working boxes and see if that forces it to update past that error message.
Also if you have the correct coxial feeds have you tried the actual activation line? 0800 953 9500 - you will need the box serial number and your account and area number.
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