First you must check that you have .NET Framework, Office 2003 PIA and
VSTO 2k5 runtime are properly installed on test machine. Then, you
should check that all necessary registry keys are created for your
add-in. After it, you should check .net security permissions(you can
grant them fulltrust) for your assemblies using .Net Framework
configuration or caspol utililty. Besides you can add evironmental
variable named VSTO_LOGALERTS with a value of 1. It will make
addinloader assembly to log any erorrs to the file in your assembly
directory/

You can get more information at
http://msdn2.microsoft.com/en-us/library/2ac08ee2.aspx .

Hope it helps.

Paulo Braz Figueiredo wrote:
Hello,

I developed an outlook add-in with Visual Studio 2005 Tools for Office.
Now I'm having serious problems with the deployment of de add-in. I'm using
a Setup project that runs correctly in the development machine. The setup
also runs ok in a test machine but when I run Outlook the add-in doesn't
loads!!!
Anybody knows what may be happening? Somebody have any clue about the cause
of this error?

Thanks in advance for any help that may be provided.

Paulo Figueiredo.