In June 2014, Apple announced that they would replace both iPhoto and Aperture with a new application named Photos. Did you recently upgrade your Mac to OS X version 10.10.3 and find that iPhoto stopped working? Have you tried Apple’s new Photos application and decided that you didn’t like it? If so, you can revert to using iPhoto if, before you installed OS X 10.10.3, you had been running iPhoto version 9.6 and a previous version of OS X Yosemite (aka version 10.10.x).
