I am having trouble with my installation picking up previous versions and upgrading them.
I have added an upgrade path, but cannot seem to get it to find the previous version and upgrade it, i constantly get the message upon installation of the upgrade:
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 on the Control Panel.
I have even set the upgrade path to not include min/max version and exlude the language identifier and yes to ignore remove failure. I have also made sure the the Upgrade Code of the upgrade path matches the upgrade code of the install. The upgrade path is in the same project as the main install, could that be the problem ? I'd rather not have to make a new project for every upgrade though.
The only way i have found around this problem, is to change the product code for every build, which then creates multiple entries in the end users add/remove programs
