IPhoto wont open library after upgrade

Question

I just updated to iLife 11 and iPhoto will not open. I get the following message:
You can’t open your current photo library using this version of iPhoto.
This library must be upgraded by the iPhoto Library Upgrader application before you can use it with iPhoto. Please reinstall iPhoto from your iLife disc.
Where do I get the iPhoto Library Upgrader application from?

Answer 1

James:
Make a temporary, duplicate copy of the library and try the three fixes below in order as needed:
Fix #1
1 - delete the iPhoto preference file, com.apple.iPhoto.plist, that resides in your Home/Library/Preferences folder.
2 - delete iPhoto's cache files that are located in your Home/Library/Caches/com.apple.iPhoto folder.
3 - reboot, launch iPhoto and try again.
NOTE: If you're moved your library from its default location in your Home/Pictures folder you will have to point iPhoto to its new location when you next open iPhoto by holding the the Option key. You'll also have to reset the iPhoto's various preferences.
Fix #2
Launch iPhoto with the Command+Option keys depressed and follow the instructions to rebuild the library. Select options #1, #2 and #6.
Click to view full size
Fix #3
Rebuild the library using iPhoto Library Manager as follows:
Using iPhoto Library Manager to Rebuild Your iPhoto Library
1 -Download iPhoto Library Manager and launch.
2 -Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
3 - Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File->Rebuild Library menu option
4 - In the next window name the new library and select the location you want it to be placed.
5 - Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
Hopefully one of these will work and you won't have to resort to Fix #4, starting over with a new library and importing the original files from the current library.