MSI for Outlook 2007 AddIn



I created MSI for my Outlook 2007 AddIn in VS2008, defined Custom Action to
load VSTOInstaller.exe. When I run MSI on user's machine, Office
Customization Installer pops up and then Error occurs. "AddIn already
installed, remove Add In from Add Remove Programs..etc" I checked in Add
Remove Programs I do not find any AddIn installed. Now when I double click my
..vsto file directly it opens up Office Customization Installer and AddIn is
installed successfully. I do not know why AddIn is not being installed from

P.S All Pre requisites at user machine are already installed.
Please help me out!!

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