Unable to open iPhoto library

Question

Macbook Air froze while in iPhoto. I was not able to shutdown properly and was forced to reboot using Ctrl-Alt-Del.  When restarted, I got a message about some database not properly synced, so I shut down properly & restarted.   When I opened iPhoto, my library was missing.  When I select Other Library, I try to open my iPhoto Library which you can see was created last October but nothing happens (see screenshots)...do I create new? will that delete my original library?  will I be able to see my old photos?

Answer 1

Thanks Terence ... copied your response here just so I can find it easier later when I actually try your suggestions:
Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Repair Database. If that doesn't help, then try again, this time using Rebuild Database.
If that fails:
Option 2
Download iPhoto Library Manager and use its rebuild function. (In early versions of Library Manager it's the File -> Rebuild command. In later versions it's under the Library menu.)
This will create an entirely new library. It will then copy (or try to) your photos and all the associated metadata and versions to this new Library, and arrange it as close as it can to what you had in the damaged Library. It does this based on information it finds in the iPhoto sharing mechanism - but that means that things not shared won't be there, so no slideshows, books or calendars, for instance - but it should get all your events, albums and keywords, faces and places back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.