Success!
I added the following 2 entries to the registry and the form opens OK:
AllowTNEFtoCreateProps
(HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail]
"AllowTNEFtoCreateProps"=dword:00000000): If the value is 0, TNEF/MIME cannot
create new non-Outlook custom properties. This value is the default value. If
the value is 1, TNEF/MIME can create new non-Outlook custom properties.
AllowMSGFilestoCreateProps: If the value is 0, .msg files and .oft files
cannot create new non-Outlook custom properties. This value is the default
value. If the value is 1, .msg files and .oft files can create new
non-Outlook custom properties.
Thanks for your help Sue!
---
"Sue Mosher [MVP-Outlook]" wrote:
> What version did you have previously? This sounds like the change that was actually made in SP2, so that users can work with most .oft form templates files only by opening the template from the Tools | Forms | Choose Form dialog, browsing for User Templates in File System. This means that if the .oft file is sent as a message attachment, the user must save it to the local hard drive first.
>
> The article at http://support.microsoft.com/?id=907985 explains this change in more detail, suggests best practices, and provides registry keys that can return Outlook 2003 to the older, less secure behavior. I haven't done any experiments to determine if the registry settings work in SP3.
>
> --
> Sue Mosher, Outlook MVP
> Author of Microsoft Outlook 2007 Programming:
> Jumpstart for Power Users and Administrators
> http://www.outlookcode.com/article.aspx?id=54
>
>
> "JonnyB" <(E-Mail Removed)> wrote in message news:3B394345-CF0D-4594-A8BA-(E-Mail Removed)...
> > I’m running Office 2003, and service pack 3 has just been installed ad it has
> > stopped my forms from opening.
> >
> > We have ‘individual’ outlook form templates that we use for billing. These
> > are kept on the local desktop and usually accessed by 2 x clicking.
> > Now, when the form is 2 x clicked the error "the custom form could not be
> > opened. outlook will use an outlook form instead" is displayed and then a
> > standard blank email is opened.
> >
> > The forms can be opened via the file-> New-> Choose form route.
> >
> > I have tried deleting the forms cache (FRMCACHE.DAT plus the other files
> > listed in KB836558). I have also tried various registry changes mentioned in
> > the KB for similar problems – but nothing seems to work. (the registry always
> > has the changes undone before I continue!)
> >
> > Any thoughts/suggestions as to what is blocking this would be greatly
> > received!
>