Exception in thread "main" java.lang.NullPointerException
   at java.util.Hashtable.put(libgcj.so. 70 )
   at javax.swing.plaf.basic.BasicToolBarUI.setBorderToRollover(libgcj.so. 70 )
   at javax.swing.plaf.basic.BasicToolBarUI$ToolBarContListener.componentAdded(libgcj.so. 70 )
   at java.awt.Container.addImpl(libgcj.so. 70 )
   at javax.swing.JToolBar.addImpl(libgcj.so. 70 )
   at java.awt.Container.add(libgcj.so. 70 )
   at it.businesslogic.ireport.gui.ToolbarFormatPanel.initComponents(ToolbarFormatPanel.java: 170 )
   at it.businesslogic.ireport.gui.ToolbarFormatPanel.<init>(ToolbarFormatPanel.java: 57 )
   at it.businesslogic.ireport.gui.MainFrame.<init>(MainFrame.java: 489 )
   at it.businesslogic.ireport.gui.MainFrame.main(MainFrame.java: 7867 )