Yeah, must be something about AnyDVD. I will ignore it. For instance, I just did a backup and it finds problems not even the original dvd has. Here is what it says:
Media is a DVD.
Booktype: dvd+r dl (version 1), Layers: 2 (opposite)
Size of first Layer: 2017152 sectors (3939 MBytes)
Total size: 3763200 sectors (7350 MBytes)
Video DVD (or CD) label: Killer Klowns From Outer Space
Media is not CSS protected.
Video Standard: NTSC
Media is region free.
RCE protection not found.
DVD structure appears to be correct.
Found & removed error zones between files!
Found & removed invalid VOBUs!
Autorun not found on Video DVD.
Found & removed 1 bad sector protections!
Emulating RPC-2 drive with region 1!
Strange though, cause none of these things actually exist, since DVDFab removes them.