"In regard to your issue, we wish to inform you that resolution of 1920x1080 is too high for playing normal DVDs. The normal DVDs cannot be played at 1920x1080 resolution therefore you will have to lower the resolution."
Definition pf BS.
Just rip the darn thing: either using AnyDVD (like jvincent said) or something like DVDShrink (if the DVD is not using some stupid new protection).
DRM-less no player will complain and play it at any resolution. And there are better players for DVD playback than PDVD, TheaterTek for example.
And if you have TT, you can try ZoomPlayer with the same codecs...