I have recently installed Lightroom but not used it as yet. I did try the import button and some images appeared for me to download. I cancelled until a later date. As I have an iPhoto library I decided to download 5.7 for the plug in. I went to the file menu, extra plug ins but nothing shown. I looked in applications where it shows that it is version 5.7 and iPhoto plug in exists. I also tried the import button again but get a message; an internal error has occurred; Could not find namespace" AgCreativeCloudUtils". Any ideas please. I'm afraid that I am not very computer literate.