this received loss, then everything is exactly where it used to be.
Take a look inside your applications folder and you will find iPhoto, alive and well, and responsive to a double click.
Photo's and iPhoto both use the same database
Let us know how you get on with using iPhoto again.
Unfortunately I upgraded my OSX system from snow leopard to yosemite, which meant i can no longer use iphoto. I made a time machine back up before I upgraded. The time machine back up also failed to save my iphoto library, a whole year of pics are missing as well as my albums. When the upgrade was done, in the new photos app several photos are missing as well as my albums
How can I get my original content of my original iphoto library back ?before I was stupid enough to upgrade. I lost the function of the most important feature of my mac.