For Extended MAPI questions I'd recommend posting in
microsoft.public.win32.programmer.messaging where the MAPI people hang out.
"Stuart Bray" <stu.bray@gmail.com> wrote in message
news:db56a01e-cbbe-436f-96c5-e85c8dd94650@b36g2000prf.googlegroups.com...
> Hi All,
>
> I've got code that exports Outlook items to .MSG files that has worked
> in all Outlook versions up to Outlook 2007. Unfortunately, this same
> code is producing corrupt MSG files in Outlook 2010. Note that this
> code is based on the same code from the Microsoft KB article "Save
> Message to MSG Compound File" here:
>
http://support.microsoft.com/kb/171907
>
> The .MSG files exported by our application are about half the size of
> the .MSG files that are exported by Outlook itself. When I double
> click them on the file system, while Outlook is running I get an error
> dialog from Outlook saying "The operation failed". When I try to
> open the MSG while Outlook is not running, I get an error dialog
> "Cannot start Microsoft Outlook".
>
> Has anyone else noticed this behavior? Are there any changes to MAPI
> in Outlook 2010 that I am missing?
>
> Thanks in advance,
> -Stuart
>