You receive the above error when running Ghostwalker after restoring an image from PC-DOS.
This error is known to have been caused by disk encryption software. The error is known to occur even if the source hard drive was decrypted prior to the image create process. The presence of the disk encryption software alone, along with the changes it makes to the drive structure, can cause this error message.
In some cases, you can run Ghostwalker with the /fni disk access switch. Here is an example command line: