Can you copy a back-up copy. just wondering.
You should be able to do so.
Guess the original got damaged too much after all so you have to make a backup of the backup huh?
You should be able to do it with the same software that you used to create the first backup with.
As a last resort you can try contacting the manufacturer and ask if they are willing to replace your original. I heard this is sometimes done by some game manuafacturers (heard about it on this forum several times)
AFAIK you can make a copy of a copy unless it uses a copy protection with a degrading signature.