In the accepted answer to this question, it is described how to make a shortcut for any Metro app, which you can then place in the startup folder.

Example:

By making a shortcut, People.url, which points to "wlpeople:", and placing it under the path, "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup", one can make the People app start up along with Windows.

I'm close to doing the same, but with the Skype app:

My attempt at making the Skype Metro app start up with windows:

By making a shortcut, Skype.url, which points to "skype:", and placing it under the path, "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup", one can make the Skype app start up along with Windows.

This shortcut will start up the Skype app, however, if the app is not already running, the app will hang when starting up.

Can anyone tell me how to fix this? Am I using the wrong shortcut, or do I perhaps need to supply it with some arguments?