The unsubscription is not successful.

Error message is :
:11:-2147352567:31:Method '~' of object '~' failed:0::0::11:-2147352567:31:Method '~' of object '~' failed:194:START: VBErrorInfo Description: Method '~' of object '~' failed HelpContext: 1000440 HelpFile: LastDllError: 0 Number: -2147352567 (0x80020009) Source: Agent_BUS END: VBErrorInfo :313:START: AppInfo ComputerName: PAZ02HTP3642 Operating System: Windows 2003 5.2.3790 (Service Pack 2) Time: Thu 2014:04:17 09:02:54 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 14.61.1 Unattended: True Retained: True StartMode: 1 Thread: 16476 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {4C7773C5-B94E-4E11-B9F1-1E36F0145E6A} ContextInfo.ContextId: {84C84C48-A9C6-42EE-8384-B125CDE4A3FA} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {30ED88B2-B0CE-4726-B889-D0422F9EEB19} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:176:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3642 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: