ERROR_PRODUCT_VERSION 1638 Another version of this product is already installed
ERROR_PRODUCT_VERSION 1638 Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs in Control Panel.
Hello. I have an MSI installer that just contains a MSN module. My Basic MSI installer is the typical installer: it has feature, product version & name, and no components. It works very well. I changed the Product Version but not the Product Code and Upgrade Code.
The package code is changed each time I build a new installer because I left the default stuff in Install Shield. The problem is that I get ERROR_PRODUCT_VERSION (1638) when I want to do a minor upgrade. It seems that my new MSI installer is somehow same as the old one. What do I need to change in the new MSI installer in order to get a new one?
The MSN module I have installs some DLL which of course in the new version have different versions. Thanks for your support.