Paul,

I would upgrade to the latest Data Protection for Domino.
There have been a number of issues similar to this solved.
Go here:

   Site:  ftp.software.ibm.com
   Dir:
/storage/tivoli-storage-management/maintenance/tivoli-data-protection/domino/v515

If the problem still exists, please call IBM support.

Thanks,

Del

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> After a long period without any problems suddenly our Domino server
> crashes when we start the 'TDP for Lotus Domino'  backup
> The machine was rebooted but the problem remains.