I'm new to cake decorating and have done about a dozen cakes with fondant without issues with air bubbles.  I have a cake due Sunday and had to make 12 lbs of MMF.  I am trying to roll it out and it has HUNDREDS of tiny, little air bubbles in it.  I have tried to reknead it (without folding it in on itself) and reroll it several times and cannot get rid of the bubbles.  Is my fondant now ruined?  So frustrated!!!