title: OSX .pkg installer sometimes does not install .app file
body: <p>My Java application has a launcher which is a .app and a helper app which is bundled with it.</p>
  
  <p>I am trying to make .pkg installer with a background image using the following commands:</p>
  
  <pre><code>pkgbuild --root "./Temp"  --identifier "com.company.id" --install-location "/Applications" --sign "signature" "temp.pkg"
  productbuild  --package-path "temp.pkg" --distribution "./Distribution.xml" --package-path "./Temp" --resources "./Resources" --sign "installer signature"  "$FINAL_PKG"
  </code></pre>
  
  <p>When I look in the directory at ./Temp both of the .app folders are there and when I deconstruct the .pkg with:</p>
  
  <p><code>pkgutil --expand "temp.pkg" "temp"</code></p>
  
  <p>I see the .app folders but sometimes one of the .app folders do not show up when it is installed from the pkg. They always seem to show up the first time it is installed, but on machines where the application is installed and deleted many times (like on test and development machines) one of the .app folders will eventually not show up. I am wondering what could be going on here?</p>
  
  <p>Initially we had the helper app inside a separate directory as the main app and in this case, the helper app would sometimes not get installed but the main app always would be. Next, we tried putting the helper app inside of the main app and then this worked the first time but the next time I tried to to install from the installer the main app wasn't there!</p>