IPhoto not launching completely

Question

I haven't been able to access iPhoto for the past two days. I've been on the forums and seen others describe the same problem I'm having (see https://discussions.apple.com/message/15736289#15736289 )
Here's what is happening:
1) Open iPhoto
2) Appears to launch
3) Menu headings appear but no iPhoto interface ever appears
4) Almost all menu options are grayed out including Quit
5) Cannot quit iPhoto without performing force quit
6) When attempting to reboot the entire computer, iPhoto will not quit unless I force quit
Troubleshooting attempts that have failed:
-Checked to see if all iPhoto library contents are still intact. When I show the package contents for iPhoto and they are intact.
-Upgraded from 7.1.5 to the latest version in iLife '11 via App Store
-Uninstalled iPhoto app (as well as all pkg files in Receipts folder) and reinstalled
-Trashed plist file
-Ran Disk Utility after booting from external drive. Repaired permission. Repaired disk.
Troubleshooting that partially failed:
-Started iPhoto while holding down Option key
-Created new library
-Had to force quit out of app
-Restarted app
-Most options are no longer gray including Quit so I can quit the app
-But when I select a menu option such as Import to Library, the menus all go gray again except for Quit and a few others.
iPhoto never formally crashes so I don't have a crash report for diagnostic purposes.
Console Messages aren't much help either.
Before the clean reinstall of iPhoto I got the following:
Since reinstalling the app the only iPhoto related message that appears in Console Messages is:
([0x0-0x8b08b].com.apple.iPhoto[2965]) Exited: Terminated
The last step I can think of is a 10.6.8 system reinstall unless someone has other suggestions for troubleshooting

Answer 1

Hooray! I finally got a positive result thanks to your help, TD! Thank you so very much!
For the sake of documentation, here's what I did:
Based on the thread you directed me to I went to the User/Library/Preferences folder and found the following files:
com.apple.iApps.plist
com.apple.iPhoto.LSSharedFileList.plist
com.apple.iPhoto.plist
I moved them to a folder on my desktop I created named "Preferences A".
Then I moved the AlbumData.xml from iPhoto there as well.
When I launched iPhoto it brought up an interface!
Next, it asked it prompt to upgrade in order to run
Then it advanced to "Writing new iPhoto library data..."
Finally, it advanced to "Updating library..." going through all the photo files already present in the library file
Once that was complete, the welcome screen for the updated iPhoto app came up along with all the photos I had in my original library
Again, thank you TD!!!