well...
It appears there are an excessive number of available tracks on this disc. The drive was going nuts when the first selection was made available to me.
Previous occasions, I just clicked on, to rip the disc. However what ever was happening before I went to burn, was clearly conflicting with my end result.
A little patience (about 20 minutes) to let the blu ray disc spin down, was finally enough to get DVDFAB to complete its thing :)
I will attempt to provide log files, as requested, shortly. Thank you -
Adam