www.makemkv.com

Hello there. I'm trying to rip my roger waters in the flesh dvd and the software crashes when opening disk. I check the log file and I got this:

Debug log started at Wed Feb 12 01:39:21 2014 , written by MakeMKV v1.8.8 win(x64-release)
Using 524544KB for read cache.
001005:0000 MakeMKV v1.8.8 win(x64-release) started
001004:0000 Debug logging enabled, log will be saved as C:\Users\Martin/MakeMKV_log.txt
003007:0000 Using direct disc access mode
003024:1000 Complex multiplex encountered - 28 cells and 18296 VOBUs have to be scanned. This may take some time, please be patient - it can't be avoided.
003028:0000 Title #1 was added (28 cell(s), 2:32:20)
003024:1000 Complex multiplex encountered - 2 cells and 2199 VOBUs have to be scanned. This may take some time, please be patient - it can't be avoided.
003028:0000 Title #2 was added (2 cell(s), 0:18:19)
003025:0000 Title #3 has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped


Anybody can understand this?

Nothing looks amiss from the log. What do you mean by "crashes"? As in the GUI just disappears? What platform and version of makemkv are you using when you observe this?

MakeMKV v1.8.8 win(x64-release) started
Debug logging enabled, log will be saved as C:\Users\Martin/MakeMKV_log.txt
Using direct disc access mode
Complex multiplex encountered - 27 cells and 17459 VOBUs have to be scanned. This may take some time, please be patient - it can't be avoided.
DEBUG: Code 1355065 at @p<*+^VPu!WBM)Cr:121263498
DEBUG: Code 0 at 8Dj\BhE5O.w'2 9W`F:213140127
DEBUG: Code 0 at 8Dj\BhE5O.w'2 9W`F:121273135
Title #1 (2:32:34) was skipped due to navigation error
Complex multiplex encountered - 2 cells and 2199 VOBUs have to be scanned. This may take some time, please be patient - it can't be avoided.
Title #2 was added (2 cell(s), 0:18:19)
Title #3 has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Drive DVD+R-DL TSSTcorp CDDVDW TS-L633J TF03 has RPC protection that can not be bypassed. Change drive region or update drive firmware from http://tdb.rpc1.org. Errors likely to follow.
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '2048'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '2048'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '2048'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '2048'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '2048'
DEBUG: Code 1 at <Hk5v#hBwA$=_":M:121262532
DEBUG: Code 0 at HK%Pcog`}(?l}R>:213138678
DEBUG: Code 0 at Uqv%qYy!$OG:d0:213133710
DEBUG: Code 233 at A9CQ1RiVGyiwuZEKJlliHhtF:0
Failed to open disc

Drive DVD+R-DL TSSTcorp CDDVDW TS-L633J TF03 has RPC protection that can not be bypassed. Change drive region or update drive firmware from http://tdb.rpc1.org. Errors likely to follow.
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '2048'

Given the brand of the drive, I doubt that the RPC can't be bypassed - I have two of those drives, and they work just fine with MakeMKV, most of the time. And I do rip "out of region" disks, since neither of them has actually had a region selected.

There are exceptions, however. When I see this error, restarting MakeMKV usually fixes it. When it doesn't, cleaning/waxing the disk has proven to be a fix. Why? Because the minor scratches fool the drive into reporting an invalid region. That isn't supposed to happen, but...