We will need to know more, to be able to help you to find and restore your images.
- What exactly do you mean by "lost 4 month of photos". Are earlier projects still visible in Aperture or are all your projects missing?
- What is your Aperture version and your MacOS X version?
- And what were the last action you did on your mac, before the photos went missing? Did you install something, update something, run some cleaning tools?
- Did you move your aperture library to a different location?
Please tell us anything you think that might help to understand what happenend.
Sometimes images appear to be missing, but are only hidden.
- Have you looked in Aperture's Trash? And the Trash on your Desktop?
- Have you looked at the searchfields in the browser and Inspector if they are cleared and are showing "All Items" or "Showing all"?
Have you opened the correct Aperture Library? If you type ".aplibrary" into the Spotlight searchfield in the upper right corner of your screen, do you see more than one Aperture library?
Regards
Léonie