If you are using VSTO SE to develop the Outlook 2007 Add-in. Visual Studio will add the setup project for you, you just need to add custom actions which grant full trust to your Add-in assembly into the Setup project. You can refer the following two articles:

http://msdn2.microsoft.com/en-us/library/bb332051.aspx

http://msdn2.microsoft.com/en-us/library/bb332052.aspx


If you are using Visual Studio 2008. You need to create a new setup project. But there are more things we need to take care of, like Registry and Manifest and Permission Trust, read more information in Mary Lee's article:

http://blogs.msdn.com/vsto/archive/2008/04/10/deploying-an-office-solution-using-windows-installer-mary-lee.aspx

after following above steps still your adding not loaded then

Then, you need to set VSTO_SUPPRESSDISPLAYALERTS environment to 0. This will make you get exact error message.

And Geoff has post a detailed troubleshooting steps in the following thread.

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=3319388&SiteID=1

See if information in above link helps.


If you still face any problem Please let me know..

AtishRG
atish_r_gaikwad@yahoo.co.in