*** libdvdread: CHECK_VALUE failed in ifo_read.c:1956 ***
*** for (pgci_ut->lu[i].exists & 0x07) == 0 ***

libdvdnav: vm: ifoRead_PGCI_UT failed
libdvdread: Encrypted DVD support unavailable.
************************************************
**                                            **
**  No css library available. See             **
**  /usr/share/doc/libdvdread4/README.Debian  **
**  for more information.                     **
**                                            **
************************************************
^Clibdvdread: Invalid main menu IFO (VIDEO_TS.IFO), ifoRead_FP_PGC() failed.
[00000414] main access error: no access module matched "dvd"
[00000412] main input error: open of `dvd:///dev/cdrom' failed: could not create access: no access module matched "dvd"