title: Using packagemaker to combine multiple packages under one
body: <p>I am making an installer for Mac, and I need to distribute multiple packages under one. But the problem is that when I drag the packages on the Contents pane of the Package Maker, they are marked with "?"</p>
  
  <p>So can anyone wxplain me how to do something like this.
  I am using the latest version of Package Maker on Lion.</p>