Outlook 2007 Application event AttachmentContextMenuDisplay not working.

I am writing an addin for Outlook 2007 (yes 2007)

Code is simply this....

Private Sub ThisAddIn_Startup() Handles Me.Startup
	AddHandler Me.Application.AttachmentContextMenuDisplay, AddressOf Attachment_ContextMenu_Event
End Sub

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Private Sub Attachment_ContextMenu_Event(CommandBar As Microsoft.Office.Core.CommandBar, Attachments As Microsoft.Office.Interop.Outlook.AttachmentSelection)
    End Sub

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The event never happens on my work PC.  But I just now tried it my home computer and it worked fine.  The work PC is under group policy can this be the problem or are there other settings in Outlook 2007 that could be preventing this from working?
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darbid73Author Commented:
I worked out the answer.  The above event will not fire if "Turn Off Attachments Preview" is checked in Outlook.  Also the above event does not fire if the attachment is in the body of the text and not at the top.

How do I uncheck this property
Preview Attachments
In case the link is changed.  Here is the text for Outlook 2010.  The only difference for 2007 is that you get to the property with Tool > Trust Center > Attachment Handing.

If you don't want to use some or any of the attachment previewers, do the following in Outlook:

    Click the File tab.

    Click Options

    Click Trust Center.

    Under Microsoft Outlook Trust Center, click Trust Center Settings, and then click Attachment Handling.

    Do one of the following:

        To turn off all attachment previewers, click Turn off Attachment Preview.

        To turn off a specific attachment previewer, click Attachment and Document Previewers, clear the check box for a previewer that you want to turn off, and then click OK.

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