SCSI Error Scrambled Sector Without Authentication

[CrimsonComet]

I was ripping the SpongeBob First 100 Episodes DVD and most of the time before opening the disc I get this message:
ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION
The copying has always come back successful, but is there any reason to be worried about issues with the result? These are the only discs I've encountered this on. I have the LG BP60NB10.