Upgrade iPhoto Library
I downloaded the most recent version of iPhoto version 9.5.1 I originally had an older version that was part of iLife when I purchased my macbook pro back in 2009. I have upgraded the software to the newest version OS X Version 10.9.4 When I open the new iPhoto it has a pop up that says "The photo library needs to be upgraded to work with this version of iPhoto." "Your photo library will not be readable by previous versions of iPhoto after the upgrade. The upgrade process for very large libraries may take an hour or more to complete." When I click Upgrade it shows "examining iPhoto Library" for a few seconds and then the whole app shuts off. HELP!
MacBook Pro, OS X Mavericks (10.9.4)