Closed Issue: SharePoint List Destination error. [17894]

<p>Environment: SQL 2008R2, SP 2010, VS2008 64bit</p>
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<p>Error at Delete Add Records [SharePoint List Destination [32]]: System.InvalidCastException: Unable to cast COM object of type &quot;&#39;System.__ComObject&#39; to class &#39;System.Net.NetworkCredetial&#39;. Instances of types that.......</p>
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<p>I&#39;m in trouble here!!!!!</p>