Installshield Express, another version of this product is already installed [duplicate]

This question already has answers here: Closed 10 years ago.

Possible Duplicate:

MSI Install Fails because “Another version of this product is already installed”

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.

But w开发者_如何学Pythonhen 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.

There seems to be a way to remove the previuos version first but I do not get this to work.

THe only thing I would like is to have an update installed or if noting is installed there will be a fresh install.

What is the best way / approach to make this happen?

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Don't change the product code, you change the package code. If you change the product code, it will think it is a new product and when installed, it will create a new entry in add/remove. If you change the package code, it will think it is a new install, and try to upgrade your already installed product.

Basically you want to create a small update as defined here http://kb.flexerasoftware.com/doc/Helpnet/installshield12helplib/MajorMinorSmall.htm