[issue5291] Windows upgrade to 2.6.1 requires 2.6 installer to be present

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

How exactly did you install the old installer? It should have been
cached into your Windows folder, so that it is available on uninstallation.

That the old installer is required on an upgrade installation in
unavoidable; installation of 2.6.1 essentially uninstalls 2.6 first,
then installs 2.6.1 - the uninstallation requires the old installer.

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nosy: +loewis

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