Thanks Mike
I did give out some bum info in the first post though - this problem IS happening in the GUI. Logs for two discs below.
These are DVD's, and both the rips shown were done on two different drives for comparison
Debug log started at Mon Oct 11 12:32:21 2010 , written by MakeMKV v1.6.0 win(x86-release)
Using 259200KB for read cache.
001005:0000 MakeMKV v1.6.0 win(x86-release) started
001004:0000 Debug logging enabled, log will be saved as C:\Documents and Settings\mcmusic/MakeMKV_log.txt
001003:0020 DEBUG: Code 134219780 at )SD|7i'A?n2KW=WhE:121261957
001003:0020 DEBUG: Code 0 at )SD|7i'A?n2KW=WhE:121263774
003031:0000 Drive BD-ROM ATAPI iHOS104 WL06 has RPC protection that can not be bypassed. Change drive region or update drive firmware from
http://tdb.rpc1.org. Errors likely to follow.
003007:0000 Using direct disc access mode
003028:0000 Title #0 was added (12 cell(s), 1:29:36)
003025:0000 Title #1 has length of 1 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #2 has length of 8 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #3 has length of 17 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #4 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #5 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #6 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #7 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #8 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
005011:0000 Operation successfully completed
005014:0000 Saving 1 titles into directory C:/rips
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213130490
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213129639
001003:0020 DEBUG: Code 0 at ^m.0&P3(7X$IY\$JhQ@:29394183
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213130490
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213129639
001003:0020 DEBUG: Code 0 at mbekjYvz,FE4*_>|AuF:29394160
001003:0020 DEBUG: Code 0 at mbekjYvz,FE4*_>|AuF:29395195
001002:0020 LIBMKV_TRACE: Exception: Error while reading input
005003:0000 Failed to save title 0 to file C:/rips/title00.mkv
005004:0080 0 titles saved, 1 failed
005037:0204 Copy complete. 0 titles saved, 1 failed.
001003:0020 DEBUG: Code 2 at HV%2;Rj7E~bVzX-3:213135251
001003:0020 DEBUG: Code 2 at HV%2;Rj7E~bVzX-3:213135251
001003:0020 DEBUG: Code 2 at HV%2;Rj7E~bVzX-3:213135251
001003:0020 DEBUG: Code 2 at HV%2;Rj7E~bVzX-3:213135251
001003:0020 DEBUG: Code 2 at HV%2;Rj7E~bVzX-3:213135251
001003:0020 DEBUG: Code 101019395 at ({KcoB=x8&.$yvq+@):29395839
001003:0020 DEBUG: Code 101019395 at ({KcoB=x8&.$yvq+@):121261727
002003:0000 Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading 'DVD+R-DL TSSTcorp CDDVDW TS-T633A FS00' at offset '1048576'
003007:0000 Using direct disc access mode
003028:0000 Title #0 was added (12 cell(s), 1:29:36)
003025:0000 Title #1 has length of 1 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #2 has length of 8 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #3 has length of 17 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #4 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #5 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #6 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #7 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003025:0000 Title #8 has length of 11 seconds which is less than minimum title length of 3600 seconds and was therefore skipped
003032:0000 Region setting of drive TSSTcorp:CDDVDW TS-T633A does not match the region of currently inserted disc, trying to work around...
001003:0020 DEBUG: Code 0 at )SD|7i'A?n2KW=WhE:213130283
001003:0020 DEBUG: Code 0 at )SD|7i'A?n2KW=WhE:213133250
005011:0000 Operation successfully completed
005014:0000 Saving 1 titles into directory C:/rips
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213130490
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213129639
001003:0020 DEBUG: Code 0 at ^m.0&P3(7X$IY\$JhQ@:29394183
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213130490
001003:0020 DEBUG: Code 0 at T.g'OyG"}$?mfYyd3n=jW:213129639
001003:0020 DEBUG: Code 0 at mbekjYvz,FE4*_>|AuF:29394160
001003:0020 DEBUG: Code 0 at mbekjYvz,FE4*_>|AuF:29395195
001002:0020 LIBMKV_TRACE: Exception: Error while reading input
005003:0000 Failed to save title 0 to file C:/rips/title00.mkv
005004:0080 0 titles saved, 1 failed
005037:0204 Copy complete. 0 titles saved, 1 failed.