I have a Windows Service project, A, with a dependency on a class library project, B. Project B has XML files set as Content, Copy if newer. In the bin\Debug folder of project A, these content files are successfully copied.
Edit (more failure):
The Primary output installs fine. I cannot get the Content Files to install.
Edit (win):
I had it all wrong, I have Primary Output from Project A and added a custom action to install it because it's the service exe. Content files from Project B simply have to be included in the setup project... not "installed" as a custom action.