Occasionally Snapshot misbehaves...

Are you using the latest version?

Is it just the .exe or are you using the installer?

Whatever version you are using try the other one and use the verify option when making the image...(sounds nuts but worked for me when I had an issue on a slow client machine)

Sadly Arconis does not leave offsets intact during a restore...

Like I said Snapshot is one of a very few image / restore apps that respects preset offsets...

I hope you can get it working...

Good luck.