Wix UpgradeVersion
I'm trying to do the tutorial "Checking for Oldies" from https://www.firegiant.com/wix/tutorial/upgrades-and-modularization/checking-for-oldies/ . <?xml version='1.0' encoding='Windows-1252'?> <Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'> <Product Name='Foobar 1.0.1' Manufacturer='Acme Ltd.' Id='027F68D8-1963-4C76-8274-7091232BB4F4' UpgradeCode='6768C9D3-52DF-4E7E-A8C3-F9CB9F29EA91' Language='1033' Codepage='1252' Version='1.0.1' > <Package Id='*' Keywords='Installer' Description="Acme's Foobar 1.0.1 Installer" Comments='Foobar is a registered trademark of Acme Ltd.' Manufacturer=