I prefer long-winded. It gives me more to work with.
Sounds like you ether have DVD Movies that are not protected, or you have a program such as AnyDVD.
Strange that "Recode Main Movie to DVD" works where "Remake a DVD" fails.
If you do not mind, could you use DVD Shrink to Rip one DVD that shows this symptom to your Hard Drive, and see if "Remake a DVD" then works for you when you select that Video_TS folder?
And can you confirm if you are using AnyDVD or a similar program so that I can try and duplicate your issue? Once I can duplicate your issue, we can find a solution.