title: Installshield Express, another version of this product is already installed
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/3970862/msi-install-fails-because-another-version-of-this-product-is-already-installed">MSI Install Fails because &ldquo;Another version of this product is already installed&rdquo;</a>  </p>
  </blockquote>
  
  
  
  <p>I am getting a little bit frustrated from the Installshield express addon in visual studio. When I used the default installer from MS which is included in Visual Studio 2010 and I would like to create a new version of my product it ask to change the product code which I will do all the time and I can update my previous installations without any problem.</p>
  
  <p>But when I do this in installshield I need to change this manualy (which is no problem) but I get several installs in the list add/remove programs.</p>
  
  <p>There seems to be a way to remove the previuos version first but I do not get this to work.</p>
  
  <p>THe only thing I would like is to have an update installed or if noting is installed there will be a fresh install.</p>
  
  <p>What is the best way / approach to make this happen?</p>