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System.ArgumentException: An item with the same key has already been added

    Question

  • We are doing a "Snapshot Migration."  It has been working for a week or so, but we are now getting a steady stream of the runtime errors prevening any synchronization from happening: System.ArgumentException: An item with the same key has already been added giving us nothing to do but acknowledge it.  Does anyone know what causes these? 
    Wednesday, March 24, 2010 3:41 PM

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