This is the expected behavior for that configuration. The problem is that since your component GUIDs don't line up from v1.0.0 to v1.0.1 the upgrade installs the new components and then after InstallFinalize removes the old components because it is not able to properly reference count them using the component GUIDs.
You can work around this by sequencing RemoveExistingProducts between InstallValidate and InstallInitialize. This is a less efficient way of upgrading as you are basically doing a complete uninstall and reinstall in one session as opposed to just upgrading the necessary components but it will solve your current problem. -- View this message in context: http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/Best-Practices-Using-for-GUID-automation-tp5234716p5607427.html Sent from the wix-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
