Anyone know why my iPhoto program won't save my edited photos?

Question

I can see them in the album and in the "events" in my library. When I open it that far, I see all of my edited photos, but when I open them individually, they are unedited unless I click on the "EDIT" button....THEN, they show up edited! They are also unedited when I post them on Facebook or if I save them to my desktop or when I actually have one printed! THAT tells me that for some reason, iPhoto is not automatically saving my editing like it says it does! And....I HATE the fact that there is no "SAVE" or "SAVE CHANGES" button!!! Not all of them, but the ones that I recently took in jpeg format and not raw. Bummed! Please help! Thank you! When I first got my camera, I didn't know about the "RAW" setting so I was using JPEG back then and it worked. Why all of a sudden is it not???....FRUSTRATED.

Answer 1

Try trash the com.apple.iPhoto.plist file from the HD/Users/ Your Name / library / preferences folder.
(On 10.7: Hold the option (or alt) key while clicking on the Go menu in Finder to access the User Library)
(Remember you'll need to reset your User options afterwards. These include minor settings like the window colour and so on. Note: If you've moved your library you'll need to point iPhoto at it again.)
What's the plist file?
For new users: Every application on your Mac has an accompanying plist file. It records certain User choices. For instance, in your favourite Word Processor it remembers your choice of Default Font, on your Web Browser is remembers things like your choice of Home Page. It even recalls what windows you had open last if your app allows you to pick up from where you left off last. The iPhoto plist file remembers things like the location of the Library, your choice of background colour, whether you are running a Referenced or Managed Library, what preferences you have for autosplitting events and so on. Trashing the plist file forces the app to generate a new one on the next launch, and this restores things to the Factory Defaults. Hence, if you've changed any of these things you'll need to reset them. If you haven't, then no bother. Trashing the plist file is Mac troubleshooting 101.