The EncryptDisc product contains a security system that only allows using the encryption engine on DataLocker encoded discs.  

This ensures that your discs have not been tampered and the EncryptDisc application on the disc has been verified.

Please note: You MUST use the built in EncryptDisc program on the Disc to copy and open the files on the EncryptDisc, or else the files will either not be viewable or will not become encrypted when burned to the disc.