Icy Version 1.9.9.1
Java(TM) SE Runtime Environment 11.0.1+13-LTS (64 bit)
Running on Mac OS X 10.13.6 (x86_64)
Max java memory : 2.4 GB

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java.lang.NoClassDefFoundError: com/sun/awt/AWTUtilities$Translucency
at org.pushingpixels.substance.internal.utils.SubstanceCoreUtilities.isRoundedCorners(SubstanceCoreUtilities.java:574)
at org.pushingpixels.substance.internal.ui.SubstanceRootPaneUI.__org__pushingpixels__substance__internal__ui__SubstanceRootPaneUI__installUI(SubstanceRootPaneUI.java:227)
at org.pushingpixels.substance.internal.ui.SubstanceRootPaneUI.installUI(SubstanceRootPaneUI.java)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:685)
at java.desktop/javax.swing.JRootPane.setUI(JRootPane.java:449)
at java.desktop/javax.swing.JRootPane.updateUI(JRootPane.java:459)
at java.desktop/javax.swing.SwingUtilities.updateComponentTreeUI0(SwingUtilities.java:1363)
at java.desktop/javax.swing.SwingUtilities.updateComponentTreeUI0(SwingUtilities.java:1378)
at java.desktop/javax.swing.SwingUtilities.updateComponentTreeUI(SwingUtilities.java:1354)
at org.pushingpixels.substance.api.SubstanceLookAndFeel.setSkin(SubstanceLookAndFeel.java:2156)
at org.pushingpixels.substance.api.SubstanceLookAndFeel.setSkin(SubstanceLookAndFeel.java:2261)
at org.pushingpixels.substance.api.SubstanceLookAndFeel.setSkin(SubstanceLookAndFeel.java:2302)
at icy.gui.util.LookAndFeelUtil$3.run(LookAndFeelUtil.java:358)
at icy.system.thread.ThreadUtil$CaughtRunnable.run(ThreadUtil.java:61)
at icy.system.thread.ThreadUtil.invokeLater(ThreadUtil.java:261)
at icy.system.thread.ThreadUtil.invokeLater(ThreadUtil.java:244)
at icy.gui.util.LookAndFeelUtil.setSkin(LookAndFeelUtil.java:351)
at icy.gui.util.LookAndFeelUtil.init(LookAndFeelUtil.java:168)
at icy.main.Icy$2.run(Icy.java:272)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:303)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by :
java.lang.ClassNotFoundException: com.sun.awt.AWTUtilities$Translucency
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at org.pushingpixels.substance.internal.utils.SubstanceCoreUtilities.isRoundedCorners(SubstanceCoreUtilities.java:574)
at org.pushingpixels.substance.internal.ui.SubstanceRootPaneUI.__org__pushingpixels__substance__internal__ui__SubstanceRootPaneUI__installUI(SubstanceRootPaneUI.java:227)
at org.pushingpixels.substance.internal.ui.SubstanceRootPaneUI.installUI(SubstanceRootPaneUI.java)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:685)
at java.desktop/javax.swing.JRootPane.setUI(JRootPane.java:449)
at java.desktop/javax.swing.JRootPane.updateUI(JRootPane.java:459)
at java.desktop/javax.swing.SwingUtilities.updateComponentTreeUI0(SwingUtilities.java:1363)
at java.desktop/javax.swing.Swin