IPhoto Chrashes Importing Movies

Question

I have an early 2008 24" iMac 2.8GHz Intel Core 2 Duo with 4GB RAM. I dropped a 2TB SATA HD in it, and everything works perfectly...except iPhoto and iMovie.
I am currently running iPhoto 11 9.4.2 & iMovie 9.0.8
For the last 4 months iPhoto and iMovie have crashed the moment they were launched. I remember hearing that there was a third party codec that was wreaking havok on Macs, so I searched for anything that was installed on this machine in the past and deleted suspect apps. The problem persisted.
So on a hunch I removed all .AVI and .MOV files from my iPhoto Library and placed them in a folder on my desktop. That allowed iPhoto to launch, but it was quitting in the middle of imports from my iPhone 4. After examining the the iPhoto Library and comparing it to the photos and movies on my iPhone's Camera Roll, I discovered that as soon as iPhoto encountered a movie shot on my iPhone 4, iPhoto would crash and display the massive log file.
So now i am forced to select only photos to import off of my iPhone, and the movies I have are in limbo till I discover how to fix this. iMovie crashes immediately to this day, and I can't find an answer anywhere.
There are 3 accounts on this machine; mine, my girlfriends, and a stagnent admin account.

Answer 1

For the last 4 months iPhoto and iMovie have crashed the moment they were launched.
make a temporary, backup copy (if you don't already have a backup copy) of the library and try the following:
1 - delete the iPhoto preference file, com.apple.iPhoto.plist, that resides in your
     User/Home/Library/ Preferences folder.
2 - delete iPhoto's cache file, Cache.db, that is located in your
User/Home/Library/Caches/com.apple.iPhoto folder (Snow Leopard and Earlier).
or with Mt. Lion from the User/Library/Containers/com.apple.iPhoto/
Data/Library/Caches/com.apple.iPhoto folder
3 - 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 down the Option key when launching iPhoto.  You'll also have to reset the iPhoto's various preferences.
NOTE 2:  In Lion and Mountain Lion the Library folder is now invisible. To make it permanently visible enter the following in the Terminal application window: chflags nohidden ~/Library and hit the Enter button - 10.7: Un-hide the User Library folder.
Also look for the iMovie preference file, com.apple.iMovie.plist, and move it to the Desktop.  Then launch iMovie.
OT