Autopsy Error When Attempted to Load e01 File

Hi everyone!

I'll try to make this as short as possible:
- I have a usb drive that's 10 years old
- I used FTK Imager to create an e01 of the drive after adding, then intentionally deleting two image files
- I load all of the essential plugins when adding a newsource to Autopsy
- Get "Possible Incomplete Image: Error reading file system at offset 4,110,417,408" in log
- All deleted files - jpg, png, txt - do not represent the original files in any way

Am I doing something wrong here or is that error causing my problem? Thanks for looking this over.