Ok this fixes my issue, I just refreshed the file you cited. Now my window is lauching but I have some other issues :

- First, the "é,è,à" characters are not printed well, even though Ant is encoding in UTF-8...

- Secondly, I have a JPanel composed with JCheckBox which is absent [:(]

Can you continue to help me please? I don't have any error message in the console this time.