why won't my iphoto open

Its broken

Seriously how in the world would you expect anyone to answer that question - if you give Zero Information then you are likely to get no seriously answers

Tell us what version you have, what has changed, what does happen and what does not happen - is the application missing

LN

Iphoto 11 when you try to open app the dial spins app won't open

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 Rebuild iPhoto Library Database from automatic backup.

If that fails:

Option 2

Download iPhoto Library Manager and use its rebuild function. This will create a new library based on data in the albumdata.xml file. Not everything will be brought over - no slideshows, books or calendars, for instance - but it should get all your albums and keywords 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. .

Regards

TD

Thank you Terence, it worked!