Read error in the file

! Read error in the file I:\VIDEO_TS\VTS_01_0.VOB
! The maximum number of secrets that may be stored in a single system has been exceeded.

what secrets? how many of them are there anyway?
Do I need to get Robert Langdon on this case to uncover the hidden meaning behind these alleged secrets?

What are you using (program) that generates the error.

I just tried to copy files from the DVD to the HDD.

There is copy protection on the dvd that is why you are getting that message. You need to use a ripping program .