JDesktopPane crashed when added new JInternalFrame about seaglass HOT 2 CLOSED

Verified in SeaGlass 0.1.6.

Fixed in r.1072.

After discussion on the Sea Glass Google group, including much criticism of use 
of JDesktopPane, it was 
decided to use a slight variant of the non-Mac look on a Mac. We use the Mac 
background colors for the 
JInternalFrame, but otherwise use the non-Mac code.

Use of setContentPane in a JFrame is also discouraged in Sea Glass. Add the 
control to BorderLayout.CENTER 
of the existing content pane instead, e.g. instead of

    this.setContentPane(dPane);

do

    this.add(dPane, BorderLayout.CENTER);

It looks the same.