Synthetic fail. 671 (query for list of component images failed)

NetBackup 7.5.0.6

Linux Master(and client...its backing itself up)

 

1388761662 1 2 32 nbmaster 0 0 0 *NULL* bpdbm File: ../nbe_cat_image.cpp Line: 3191: File record not found in synthetic backup, 

1388761662 1 2 16 nbmaster 1002 0 0 *NULL* DBImageQuery::getNextRecord unable to receive the response to the image query, error=the database contains conflicting or erroneous entries(238)

1388761662 1 2 16 nbmaster 1002 0 0 *NULL* SynthJob::queryImages caught synth EXCEPTION, error=the database contains conflicting or erroneous entries(238)

1388761662 1 2 16 nbmaster 1002 0 0 *NULL* SynthJob::doStart preparation for generating synthetic image failed, error = query for list of component images failed(671)

1388761662 1 2 16 nbmaster 1002 0 0 *NULL* SynthJob::cleanup end bpsynth with status = query for list of component images failed(671)

1388761663 1 68 4 nbmaster 1002 1002 0 nbmaster nbpem CLIENT nbmaster  POLICY isilon-mpc-pit-1-ext1-1  SCHED synth  EXIT STATUS 671 (query for list of component images failed)

 

I've seen other mentions of this in forum posts here but they suggested upgrading to 7.1 ...which we're well past that :)

 

I've got verbose to 5, and still can't find any real details anywhere of what exactly the conflicting/erroneous entity is.  Hardly helpful.

 

In case it matters, the policy is sometimes being updated with additional includes each night before the regular incremental.  But the incremental runs after the update, and then the Synthetic follows.  But presumably that won't cause problems.  

 

Any pointers to what might be the problem, or where i can find what database entity is conflicting/erroneous would be helpful.  Maybe even some Synthetic gotcha's your aware of.  Despite having worked with NetBackup for many years i've only recently been playing with Synthetics.

 

Thanks for your time.