The DVDFab forum was no help. Didn't even get any replies except for another who was also having problems with the Converter. I had even posted earlier about it there over a year ago on the subject and basically got a "works fine for me, something wrong on your end, bye" kind of a response.
I run a clean system with no stability issues and have no codec packs installed. Use just two players, WMP/WMC, and VLC. Use just two Rippers, DVDFab and another long defunct one (the one that mysteriously exited the scene after being served a bunch of court orders down under) that still works quite well on 95% of DVDs (have the animal one too but currently don't have it installed since I really don't need it with what I already have). Don't use virtual drive software of any type. Then there are the two Video Converters I mentioned that are ranked pretty much one and two where ever you can find a review of Converters. The maker that makes DVDFab's burning component also is coming out with their own "any format to any format converter in a couple of months so there will be another option to try to see how that one works. BTW I think I've explained my software pretty clearly without violating the "rule" but it would have been a lot easier (and using less words) to have just used the names.
I have no issues with any programs on my computer except the DVDFab converter. It just pretty much doesn't work and with it's "hit or miss" results is not even worth opening anymore when I want to do a conversion. The other two converters happily eat up any food I give them. Have tried the un-install/re-install route also with no change. I've long since thought that DVDFAB has branched off in too many directions trying to contain it all in one package. I would have much preferred some of these be in their own separate programs that may have had the result of isolating issues like the one I'm having better.