My little error please help

I have the latest version of nero vision express, and i get an error at the end that the data cannot be read from disk. ??? i lost im writing to the disk. here is my error in the log. please help.

00:39:07] DVDEngine ERROR
[00:39:07] DVDEngine cause: 3 (invalid_parameter)
[00:39:07] DVDEngine source: _get_PGC_PB_TM
[00:39:07] DVDEngine description: ICellRef refers a cell (VOB_IDN=1, C_IDN=7) which does not exist in
[00:39:07] DVDEngine VTSTT_VOBS#2.
[00:39:07] DVDEngine