I have just imported all my photos onto my new imac. When i open the iphoto program each time i get a message stating that 12 photos were not imported and it creates a recovered items folder. When i look at the recovered pictures they all are listed as unix executable file followed by a series of numbers and letters. It states these files are locked. How can i unlock and delete these files as i do not need them otherwise each time i open iphoto a new recovered items folder is created containing these locked files