DVD ISO Playback Resume function not working!

Let’s narrow it down a little more.   100% of my ISOs are generated by DVDFab; they were all ripped when I first got the Live+, and they (for me) are working exactly the same way on the Hub as the did on the Live+.    I am trying to narrow down what’s different in your case than mine.

So I would assume that the RESUME function IS working for the same ISOs on the Live, right?

Is it not working for even ONE ISO?  Or is it spotty?

How are the ISOs that are not working created?

How much space is on your INTERNAL HD?