Internal server error exception: System.NullReferenceException: Object reference not set to an instance of an object.     at Microsoft.Office.Server.Search.Query.ScopeCache.TryGetScope(Guid siteGuid, Int32 id, ScopeInformation& scope)     at Microsoft.Office.Server.Search.WebControls.SearchCommon.GetScopeNameByScopeID(Guid siteGuid, Int32 scopeID)     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.SetPropertiesOnQueryReader()     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.OnInit(EventArgs e) System.NullReferenceException: Object reference not set to an instance of an object.     at Microsoft.Office.Server.Search.Query.ScopeCache.TryGetScope(Guid siteGuid, Int32 id, ScopeInformation& scope)     at Microsoft.Office.Server.Search.WebControls.SearchCommon.GetScopeNameByScopeID(Guid siteGuid, Int32 scopeID)     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.SetPropertiesOnQueryReader()     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.OnInit(EventArgs e)

Hi,

Would you please provide the detailed information about how and when the error occured ?

Thanks

Best Regards