title: Setting initial directory for NSOpenPanel
body: <p>I'm trying to get the user to select a file from a folder containing log files. So I want to display an NSOpenDialog showing the contents of that folder. I'm using Swift, so 10.9+</p>
  
  <p>I see a number of threads on this topic here, but in spite of trying what appears to be the same code converted to Swift, it invariably returns to the Documents folder. Here's a sample:</p>
  
  <pre><code>    let fd: NSOpenPanel = NSOpenPanel()
      fd.directoryURL = NSURL.fileURLWithPath("~/LauncherLogs", isDirectory: true)
      fd.canChooseDirectories = false
      fd.canChooseFiles = true
      fd.allowedFileTypes = ["log"]
      fd.runModal()
  </code></pre>
  
  <p>The folder in question does exist, and copy and pasting the path into the Go to Folder... in the Finder goes right there. Any ideas?</p>