Was out of town the last few days and just had the chance to update to V7.0 (85D delivered Jan 2015). After the upgrade, I'm getting a "cruise not available" message and, while I can see the white lines indicating lane markers, they never turn blue and I never see an image of a car in front of me. Thinking that, somehow, my front radar unit is not working but don't know if it's software or hardware? A call to Tesla said there was some error and someone "would get back to me in a few days" but no more info. Has anyone else run into this?