Index: /trunk/src/org/openstreetmap/josm/gui/preferences/SourceEditor.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/preferences/SourceEditor.java	(revision 5491)
+++ /trunk/src/org/openstreetmap/josm/gui/preferences/SourceEditor.java	(revision 5492)
@@ -752,5 +752,5 @@
 
             public void actionPerformed(ActionEvent e) {
-                JFileChooserManager fcm = new JFileChooserManager(true);
+                JFileChooserManager fcm = new JFileChooserManager(true).createFileChooser();
                 prepareFileChooser(tfURL.getText(), fcm.getFileChooser());
                 JFileChooser fc = fcm.openFileChooser(JOptionPane.getFrameForComponent(SourceEditor.this));