Yes, I had the error problem on v6.6 but havve since upgraded to Nero v7, and still get them.
I know I never got them prior to using the DVDFab software packages, and since starting with them, DVDShrink can not open anything processed by them (including personally encoding home movies (they were too big for a DVD5, so DVDFab crunched them down to size to 4.36GB size.)
Out of curiousity, I checked to see their compliance w DVDShrink, same errors. (as those DVD movies I backed up with DVDFab).
Here is a little more insight into Nero reporting of the errrors.
(but I agree the DVDs play fine, but this still makes me wonder WHY the errors are occurring to begin with:)
8:25:35 AM #2 DVDREALLOC -24 File DVDVideoCompilation.cpp, Line 1211
One or more files (mostly VOB file(s)) do not belong to the corresponding IFO file
8:25:35 AM #3 Phase 115 File dlgbrnst.cpp, Line 1725
DVD-Video files reallocation failed
8:25:57 AM #4 Phase 132 File dlgbrnst.cpp, Line 1725
DVD-Video files compliance ignored
Thanks again for your time.