https://bugs.winehq.org/show_bug.cgi?id=45317
--- Comment #24 from Vincent Povirk madewokherd@gmail.com --- Just because the GUIDs are in the build tree, that doesn't mean they go in the msi. Only directories that still exist will go in the component table.
Also, sometimes I forget to commit the GUIDs. I should probably make the build fail in that case.