smells like copy protection on Last Man Standing S1-4 DVDs

[buhlig]

Hello all, I have gone through the forums and found quite a few posts of messages about the error messages regarding "It appears that you are opening the disc processed by DVDFab/MacTheRipper..." when opening a DVD. What I have found while doing backup copies for my media server I get the message on seasons 1-3 but not the 4th, and can successfully get a *.mkv file for almost every episode. However, the following titles fail every time.
S01D01 - Title 4 (8)
S02D01 - Title 6 (10)
S03D02 - Titles 1 (5), 2 (7), 5 (13) (this may have an issue with the disc in one section, but not all)
S04D02 - Title 4 (11)

Because of this, it really feels like copy protection on the discs. They are all original dvd's from what I can tell with the holographic imprint in the center of the disc confirming the disc season and number.

Attached are the debug logs.

Thanks,

Ben