0 Replies Latest reply: Sep 11, 2012 8:35 AM by drcps
drcps Level 1 Level 1 (0 points)

I m not able to update iPhotos or redownload on my mac book air recently updated to mountain lion msg appears  'product distribution file could not be  verified it may b damaged or not signed.What is the problem,Same is with the iMovies


MacBook Air, OS X Mountain Lion (10.8.1), 11 inches