Unable to edit deploy image task keep receiving error: A critical error has occurred on this page. Check the Altiris logs for more information.

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Receiving the following when I go to deploy image task which I just created.  I'm not able to view.  Occassionally I can restart iis and it will work for a few minutes and then back to this.  Is this a common problem with DS 7.5?  I need a solution asap.