Glad its been resolved - but there are two different problems with two different solutions....
- Sunroof portion opens, but red light flashes on roof button when I try to lower the whole roof - check the parcel shelf is fixed in position and is contacting the sensors on both sides.
- Roof will not open using the normal overhead button - hold the lock/unlock toggle switch in the 'open' position to open the roof. Doing this usually resets the system and the overhead buttons should resume service.