Comment 9 for bug 1710041

I just run into the same problem: Windows 7 x64, updating from 0.92.1 x64 (exe installer) to 0.92.2 x64 (msi installer)
Launching Inkscape displays an error message (see attached image). Clicking on Ok closes the program (there is no crash).

Answering your question: no the msi installer does not recognize the previous install and that explains why zlib1.dll is not replaced.

In fact this causes a double entry in Windows Control Panel's Uninstall/Modify Program list.

I would say this is not really a bug since updating exe with exe and msi with msi does show up the uninstall question.

A solution to avoid the mixed installer problem is what Microsoft does with Skype: the installer version is slightly different (e.g. 7.34.0.101.exe vs 7.34.0.102.msi). This allows to detect that a different installer is used and issue a warning.

Hope this helps!