Index: src/MainWindow.cs
===================================================================
--- src/MainWindow.cs	(revision 3127)
+++ src/MainWindow.cs	(working copy)
@@ -2441,12 +2441,8 @@
 
 		StringBuilder paths = new StringBuilder ();
 		
-		int i = 0;
 		foreach (Photo p in SelectedPhotos ()) {
-			if (i++ > 0)
-				paths.Append (" ");
-
-			paths.Append (System.IO.Path.GetFullPath (p.DefaultVersionUri.LocalPath));
+			paths.Append (String.Format ("\"{0}\" \n", System.IO.Path.GetFullPath (p.DefaultVersionUri.LocalPath)));
 		}
 		
 		String data = paths.ToString ();
