www.makemkv.com

One title on one dvd of the eight dvd season collection fails to save. This is almost new out of the box, and I've tried cleaning it several times. Note that VLC will play the title from the dvd without showing any problems.
Here is the output from makemkv:
MakeMKV v1.6.15 linux(x64-release) started
Debug logging enabled, log will be saved as /home/dave/MakeMKV_log.txt
Using direct disc access mode
Title #0 was added (6 cell(s), 0:22:22)
Title #1 was added (6 cell(s), 0:22:23)
Title #2 was added (6 cell(s), 0:22:28)
Title #3 was added (6 cell(s), 0:22:16)
Title #4 was added (6 cell(s), 0:22:37)
Title #5 was added (6 cell(s), 0:22:22)
Title #6 was added (6 cell(s), 0:22:38)
Title #7 was added (42 cell(s), 2:37:06)
Operation successfully completed
Saving 1 titles into directory /home/dave/Videos/ROCKY_BULLWINKLE_SEAS_2_VOL_1B
DEBUG: Code 47 at QMk~56.bR9JJykb)}Py:121266626
DEBUG: Code 149 at QMk~56.bR9JJykb)}Py:121266925
DEBUG: Code 3 at QMk~56.bR9JJykb)}Py:29398737
DEBUG: Code 0 at _,O@+Pt;$LQ<8cTpe&>!~:213134377
LIBMKV_TRACE: Exception: Error while reading input
Failed to save title 1 to file /home/dave/Videos/ROCKY_BULLWINKLE_SEAS_2_VOL_1B/title01.mkv
0 titles saved, 1 failed

I've been getting these errors with one of my daughter's dvd's. it worked fine on dvdshrink. I think it's a bug in .15

This is a disc mastering error. Your log has all necessary data, thanks.