Hello (Nils),

Just a thought on this. Not a problem for me.

I was trying DFRefactor 3.1.0, version which was outdated.
Nils generated a new installer (3.2.0) which I tried to install.
I got error because the installer detected that I had another version installed of this product, so I had to uninstall the prior version to install the new versión.

As far as DFRefactor can be attached as a library I maybe want two versions side by side because I can't update all my projects at the same time.

Maybe DFRefactor is not the best example because I see it as a project, but you can think in DUF.

P.D: I have realized that DUF installer deletes the previous installation automatically and installs the new one. If you cancel the new install you ends up without the prior installation.