Edit: Duh! The error message above does offer you a solution.
Assuming your drive is still /dev/sdc2Ö
From a terminal make a folder somewhere to mount to (shouldnít really matter where but different distros have their peculiarities) and mount the drive read-only. On Ubuntu I would use the newer ntfs-3g driver, but from your screenshot maybe only the ntfs driver is available.
Then open ~/win (or ls ~/win) and see if you can access the files.
sudo mount -t ntfs /dev/sdc2 ~/win -o ro
The NTFS improper shutdown issue can only be fixed by Windows. Perhaps if you attach the drive to a system running a recent version of Windows, check the drive is assigned a letter and is readable and then shutdown cleanly, it might fix that issue. But if youíve already used the recovery tools USB you might have already done this ó did you shutdown or just reset?
Iím not familiar with either Tails or Knoppix, but it might help to manually mount the drive rather than use a file manager. Iím guessing the screenshot is from mounting the original drive. What response do you get when you try to see the copied files? Where are they copied to? Another NTFS filesystem? FAT32?