Problem developing an outlook 2007 addin with c# - retrieving the mailitem.Body property

[pdgrimm]

I am working on an Outlook addin using c#. I am more or less just trying different things to see how it all works. I first wanted to get some fields from an email written and sent in outlook. So I can get the To, CC, and subject with the following code, but when I try to get mailItem.Body or mailItem.HTMLBody I get an exception:
System.Runtime.InteropServices.COMException was unhandled by user code
Message=The operation failed.
Source=Microsoft Office Outlook
ErrorCode=-763099643
StackTrace:
at Microsoft.Office.Interop.Outlook._MailItem.set_Body(String Body)
at FirstOutlookPlugin.ThisAddIn.Inspectors_NewInspector(Inspector Inspector) in L:\Pub. Files\Beginning Visual C# 2008\Chapter09\List try\FirstOutlookPlugin\FirstOutlookPlugin\ThisAddIn.cs:line 25
InnerException:

Does anyone know what's up? I have read it may be something to do with security patches and SMIME (which I am trying to read up on). Seems like if it works getting the "to" field and stuff, it should be no problem getting the body also.
Thanks for any help!!​

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; using System.Xml.Linq; using Office = Microsoft.Office.Core; using Outlook = Microsoft.Office.Interop.Outlook; namespace FirstOutlookPlugin { public partial class ThisAddIn { //Outlook.Inspectors inspectors; Outlook.MailItem mailItem; private void ThisAddIn_Startup(object sender, System.EventArgs e) { this.Application.ItemSend += new Outlook.ApplicationEvents_11_ItemSendEventHandler(Application_ItemSend); } private void Application_ItemSend(object Item, ref bool Cancel) { Outlook.MailItem mail1 = Item as Outlook.MailItem; mail1.Save(); string body = mail1.HTMLBody; MessageBox.Show("Hello, the email body you sent it " + body); } private void ThisAddIn_Shutdown(object sender, System.EventArgs e) { } #region VSTO generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InternalStartup() { this.Startup += new System.EventHandler(ThisAddIn_Startup); this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown); } #endregion VSTO generated code }

Messing around, without trying to "get" the body using

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string body = mail1.Body

I look at the mail1 in the locals, and it's showing this in the body and htmlbody property​

Body {System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Runtime.InteropServices.COMException: The operation failed.
--- End of inner exception stack trace ---
at System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters)
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.Dynamic.IDispatchComObject.GetMembers(IEnumerable`1 names)} System.Reflection.TargetInvocationException​