Recovering deleted Files

Hello Experts,

I downloaded free version of Recuva. I am trying o recover accidental deleted files from my hard disk. So when I run the tool, I am able to see all the deleted files. But after recovering the files, I am not able to see the images correctly. It says image not viewable to paint is unable to open the file etc.

When I see the file it Recuva, it also says condition is excelent?

Any thoughts.

I am doing something in picasa, but somehow it removed whole of my image folder which has about 15000 high quality images.