Backup doesn't include all my files

Yes, I’ve explored the backup folder (wd smartware.swstor) manually, none of my pictures from iPhoto are there. My iTunes library is there with all my music in a folder called “Music” and there is a folder called “Pictures” but it’s empty.

I’ve tried the Retrieve function in Smartware, but there are no folders to choose under “Backed up volumes”. I’ve also tried the Migration Assistant to transfer files from the backup, but it can’t locate the drive at all, even though it shows up in Finder. When I try to test the external hard drive using the Diagnostics tool in Smartware it doesn’t finish, it just says “test cancelled” without me touching anything. I’ve tied using Disk Utility to see if there’s anything wrong with the external hard drive, but it says it’s ok. Are there other ways to see what’s inside the hard drive?