I've had this problem - I need to manually push the strut on the passenger side to finish the roof closing cycle. No error messages after I've done that, and no springing back up later on either.
I had this problem twice in the past and had it 'fixed' at the dealers - they said it just needed a recalibration.
I've held off throwing more money at it since as it's just so easy to push the strut by hand.
But good useful information Alphamale - it's something else I or the next repairer can investigate.
I did try pushing the strut down by hand,but the roof wouldn't stay down for long. The gas struts seem to be the way to go-bit sceptical about "recalibration"- sounds like dealer speak for just fiddling around with it! Hope you don't lose faith in yours.