Hi Angie,
The problem you are experiencing can occur if the Outcmd.dat becomes corrupt. The Outcmd.dat file stores toolbar and menu settings. Please follow the
steps in the following Knowledge Base (KB) article to see if this resolves your issue.
241390.KB.EN-US OL2000: Error Message "Outlook Executed an Invalid Instruction in Module
http://support.microsoft.com/default.aspx?scid=KB;EN-US;241390
Regards,
Scott Atkins MCSE, MCSA
Partner Technical Lead - Outlook
Microsoft Technical Support
for Platforms and Business Applications
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>Content-Class: urn:content-classes:message
>From: "angie@premiersprings.co.za" <anonymous@discussions.microsoft.com>
[quoted text clipped - 19 lines]
>when i close an email -"Outlook executed an invalid
>instruction in module <unknown> at 0000:01204122"