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[NYAKO]

I have created a basic MSI application ( compressed ). I have generated the app.msi file. I can install it. The problem appears when I modify the project. When i reinstall the file app.msi, it shows a messagebox ( There is installed another version of this product ... )
I try to create a minor upgrade, but i can't do it because it needs a setup.exe, and i don't generate it.
Please, i can't update my program.

[luke_s]

When you modify the project, are you running a modify, or are you trying to install another copy of the same project on your machine?

Have a look at the documentation on upgrades/updates to see what needs to be changed between updates.