java.lang.NullPointerException at sun.awt.font.FontDesignMetrics.initMatrixAndMetrics(FontDesignMetrics.java:167) at sun.awt.font.FontDesignMetrics.<init>(FontDesignMetrics.java:160) at sun.awt.font.FontDesignMetrics.<init>(FontDesignMetrics.java:145) at sun.awt.SunToolkit.getFontMetrics(SunToolkit.java:402) at sun.awt.motif.MToolkit.getFontMetrics(MToolkit.java:343) at javax.swing.plaf.basic.BasicTabbedPaneUI.getFontMetrics(BasicTabbedPaneUI.java:1509) at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.calculateTabRects(BasicTabbedPaneUI.java:2183) at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.calculateLayoutInfo(BasicTabbedPaneUI.java:2179) at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1153) at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1165) at javax.swing.JTabbedPane.getBoundsAt(JTabbedPane.java:1090) at javax.swing.JTabbedPane.setBackgroundAt(JTabbedPane.java:1247) at org.monazilla.v2c.V2CTabbedPane.addPanel(V2CTabbedPane.java:1234) at org.monazilla.v2c.V2CThreadViewPane.addPanel(V2CThreadViewPane.java:481) at org.monazilla.v2c.V2CThreadPanel.open(V2CThreadPanel.java:547) at org.monazilla.v2c.V2CThreadItem.open(V2CThreadItem.java:1581) at org.monazilla.v2c.V2CFavoritePanel.openSelectedItem(V2CFavoritePanel.java:1638) at org.monazilla.v2c.V2CFavoritePanel.openSelectedItem(V2CFavoritePanel.java:1570) at org.monazilla.v2c.V2CFavoritePanel$PopupListener.mouseReleased(V2CFavoritePanel.java:2789)