window.path doesn't exist if we have atom.path

src/atom/window.coffee

@@ -9,7 +9,7 @@ windowAdditions =
   path: null
 
   startup: ->
-    @path = $atomController.path.toString()
+    @path = atom.path
     @setTitle (_.last @path.split '/') or 'Untitled Document'
 
     $atomController.window.makeKeyWindow

src/startup.coffee

@@ -32,7 +32,7 @@ atom.app = new App
 for name, method of atom.app
   atom[name] = atom.app[name]
 
-atom.path = $atomController.path.toString()
+atom.path = $atomController.path?.valueOf()
 if handler = Document.handler atom.path
   atom.document = new handler atom.path
 else