There are a bunch of different reasons this error could occur, most times is 
when you have a partitioned Notes installation. Is this a partitioned 
installation? Would be interesting to know what version of NetWorker, NML 
(Notes module) and Domino you are running, since not all versions are 
compatible with each other. If you are running NML 3.x then make sure your 
config file is set up correctly.

If you have a Powerlink account on the EMC website, just do a search for "error 
= 525" and you will find several different solutions.

Cheers!

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