Did you try another disc? If another disc works, you know BD-RB and tsmuxer are not the problem. That would indicate that the error disc had a ripping problem. A suggestion would be to rip the disc again making sure it is clean and without any scratches.
If you get the same error again, reinstall BD-RB and make sure all permissions/privileges are set depending on your version of Windows. Also make sure your drive has enough space to complete.
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