Upgraded Outlook to 2007, now VSTO doesn't work

[HÃ¥kan]

I have developed an Outlook Addin using Visual Studio Tools for Office 2003.
Now I have upgraded my office to 2007.

When I try to open my project in Visual Studio, I get the error:
"Microsoft Office Outlook 2003 SP1 or newer is not installed on this
computer. You must install a version of Microsoft Office Outlook 2003 that
supports Microsoft Visual Studio 2005 Tools for the Microsoft Office System
projects." and the project will not load at all.

I installed Visual Studio 2005 Tools for Office Second Edition which was
supposed to support both the 2003 and the 2007 version, but there is no
difference.

What do I need to to to at least get my project to load into Visual Studio?

Regards,
HÃ¥kan

 

[Ken Slovak - [MVP - Outlook]]

VSTO 2005 SE does support both Outlook 2003 and 2007, but you can't develop
for both versions on the same computer. If Outlook 2003 is installed you can
develop for that version, if Outlook 2007 is installed you can develop for
that version. To develop for both versions you need 2 different computers or
2 different VM's.