How do you recover/find a lost project file?
I arranged all of my photos for a slideshow in a project. This project has now disappeared. How can I recover the lost project? Where does apple store project files?
iMac, OS X Yosemite (10.10.3)
Did you accidentally hide the Projects section?
There is a hidden "Show/Hide" control to the right of the caption "Projects". You can see it when you mouse over it.
Click the "Show" text to reveal all your projects.
This project has now disappeared. How can I recover the lost project? Where does apple store project files?
Project files are entries in the database files in the Photos library package. You cannot restore them separately. You could restore your Photos library from your last backup you made, before the project vanished.