[IMAGE NOT AVAILABLE]Can't retrieve old photos from Phoneview

I have some old photos dating back as far as 2011 on my saved text message archive in Phoneview. I want some way to retrieve these photos but all of them say [IMAGE NOT AVAILABLE] with the jpeg title above it. I have most of the photos available, but only up until the date of 20/10/2011 and that's when the error appears. There are a couple of photos that made it past after that date but only a few.

Please help, I really want to have my photos back