Why "Corrupt File or Preview Doesn't Recognize format" msg. after moving the iPhoto folder?

Hello,
I've moved my iPhoto Library from my Mac HD to an external hard drive (WD My Book 1) and now there are no pictures in the iPhoto application when I open it. I have a collection of over 3000. When I click on a .jpg photo within the iPhoto Library I get the message: "Corrupt File or Preview Doesn't Recognize format".
I've been told that this has something to do with moving the iPhoto library from one location to another and that I have to do something to have Tiger recognize iPhoto in its new location.
I moved the iPhoto library from my Mac HD to one of the My Book Ext HDs. But there also was a back up  of iPhoto Library on the 150 GB Acomdata Ext HD taken from the Mac HD that wasn't moved. That back up was done on a scheduled backup using Carbon Copy Cloner. However, when I looked for the iPhoto Library on Acomdata, all that was there were the seven item that don't, I think, make up any kind of a library:
Dir.data
iPhoto.db
iPhotoLock.data
Library.iPhoto
Thumb32.data
Thumb64.data
ThumbJPG.data
Could someone please help me with this? I thought I had backup and also that I had moved the library carefully.
In addition, there are other files that I've moved from the Mac HD to the external that aren't opening either, such as movies (.flv "The movie could not be opened), .rtf files ("File does not exist." and .pdfs ("File error. couldn't open the file.")
Thanks,
Rafael

"The backup from  Acomdata doesn't appear to be a complete library."
     (How do you make a clip of lines you quote that has a different background color — avalible to Apple support discussions?)
I didn't make that clear. The IPhoto Library backup wasn't to the Acomdata. I backed up IPhoto Library to the two 1 TB WD EHDs ("StorageUnit  WDnew" and "BU of StorageUnit  WDnew") then trashed the one on Mac HD.
The backup you see on Acomdata (clone of Mac HD) isn't a complete library. It's nothing but a new library I started to create and it's to be ignored. I should remove it.
Below is a picture of the back up of IPhoto Library and other items to the first WD "StorageUnit  WDnew". The backup on "BU of StorageUnit  WDnew" is the same. These two aren't bootable. They only store information. The Acomdata is bootable and that's where I back up my Mac HD. IPhoto used to be on the Mac HD and I moved it to "StorageUnit  WDnew". It's the same on "BU of StorageUnit  WDnew".
Will "Rebuild IPhoto Library" be able to pull from the external HD?
Why can't I drag and drop folders or files into the volumes in the side bar?
Should I do anything with Ownership and Permissions before I Rebuild IPhoto Library?
Should I press "Apply to enclosed items.” button to set the new read and write settings?
I listed the equipment I use in My Profile in My Products again. I'd done that before. Also, my picture, also in profile, isn't showing up. See what happenns this time.
Thanks. I have so much important stuff in those pictures that I'm very anxious to retrieve everything.
Message was edited by: Rafael Montserrat1

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