i saw minor update premiere 2015.4. requested older version kept , not deleted, seem have clicked "ignore commend" somewhere, .3 version no found. around same time, had request os x minor security update 10.11.6 (15g1004). since then, when load current projects try , create new projects large footage quantities, several minutes of "conforming" , "generating peek files" work see going on lower-right of window. however, ends crashing on file @ random times. bar graph not show progress. unable work on project has loaded, spinning beachball , system locks up. have force quite application , helpful "a serious error has occurred...." , have restart app. when looking @ file working on, plays fine in finder preview , in fact, pek , cfa files there, not 0 bytes in length appear intact , working. have tried deleting .cfa , .pek files , letting them regenerated. same problem. all files load fine. can't seem cfa , pek files complete doing whatever ...