Did you add an xmlns attribute on the Wix element to reference your extension's namespace?
Is the XSD embedded inside the extension assembly? You can use ILDASM or ILSPY to check. -- View this message in context: http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/Noob-creating-a-Custom-Action-in-Wix-3-8-tp7593140p7593168.html Sent from the wix-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Subversion Kills Productivity. Get off Subversion & Make the Move to Perforce. With Perforce, you get hassle-free workflows. Merge that actually works. Faster operations. Version large binaries. Built-in WAN optimization and the freedom to use Git, Perforce or both. Make the move to Perforce. http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users