I have the same problem, except I am not using BartPE.
I have a laptop running windows 7 x64. I think it might be Windows PE at this point. I am trying to recover non deleted files that have lost their directory. I downloaded and installed Recuva to my pc, also windows 7 x64. I followed the directions to put it on a usb stick and I am running it on the usb on my laptop.
I am able to run recuva64. It does the scan and finds files. When I hit the recover button it opens to the "Browse For Folder" screen but there are not any locations to choose. It just has a the words "Select location for recovery" and the 3 buttons at the bottom. It sounds like the exact same problem as above. I even tried putting in that fix but it didn't work.
If you have any other ideas I would really appreciate hearing them.
Thank you, Lisa
