Downloading photos and movies from iPhone to iPhoto and there were unreadable files
I was downloading photos and movies from my iPhone to my iPhoto library on my iMac and there were unreadable files. The file is an unrecognized format. I took it on my iPhone how could it be the wrong format??? I've had my iPhone 6 since thanksgiving and I haven't downloaded anything since then. HELP!
iPhone 6 is updated to IOS 8.1.3
imac is OS X Yosemite 10.10.2
iMac, Mac OS X (10.7.2)