BHOLD error on saving campaign

Can anyone let me know why on Saving a campaign i get "the was an error while saving the campaign".
If you check this error is generated from "C:\Program Files (x86)\BHOLD\Attestation\Web\Scripts\campaignattributes

please can anyone help me out in finding the cause of the error.
As i am able to use all my settings except for choosing OU nodes

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shakti