In the preferences panel, when you change cm to inch in the ppc parameter this crash occurs:
java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integer
at java.lang.Integer.compareTo(Integer.java:52)
at javax.swing.SpinnerNumberModel.incrValue(SpinnerNumberModel.java:349)
at javax.swing.SpinnerNumberModel.getPreviousValue(SpinnerNumberModel.java:388)
at javax.swing.plaf.basic.BasicSpinnerUI.updateEnabledState(BasicSpinnerUI.java:505)
at javax.swing.plaf.basic.BasicSpinnerUI.updateEnabledState(BasicSpinnerUI.java:486)
at javax.swing.plaf.basic.BasicSpinnerUI.access$200(BasicSpinnerUI.java:50)
at javax.swing.plaf.basic.BasicSpinnerUI$Handler.stateChanged(BasicSpinnerUI.java:1054)
at javax.swing.JSpinner.fireStateChanged(JSpinner.java:457)
at javax.swing.JSpinner$ModelListener.stateChanged(JSpinner.java:385)
at javax.swing.AbstractSpinnerModel.fireStateChanged(AbstractSpinnerModel.java:119)
at javax.swing.SpinnerNumberModel.setValue(SpinnerNumberModel.java:447)
at javax.swing.JSpinner.setValue(JSpinner.java:353)
at latexDraw.ui.dialog.DrawPropertiesFrame.actionPerformed(DrawPropertiesFrame.java:351)
at javax.swing.JComboBox.fireActionEvent(JComboBox.java:1258)
at javax.swing.JComboBox.contentsChanged(JComboBox.java:1329)
at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:116)
at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:105)
at latexDraw.ui.components.LaTeXDrawComboBox.setSelectedItem(LaTeXDrawComboBox.java:71)
at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:622)
at javax.swing.plaf.basic.BasicComboPopup$Handler.mouseReleased(BasicComboPopup.java:833)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:290)
at java.awt.Component.processMouseEvent(Component.java:6260)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3309)
at javax.swing.plaf.basic.BasicComboPopup$1.processMouseEvent(BasicComboPopup.java:497)
at java.awt.Component.processEvent(Component.java:6025)
at java.awt.Container.processEvent(Container.java:2083)
at java.awt.Component.dispatchEventImpl(Component.java:4620)
at java.awt.Container.dispatchEventImpl(Container.java:2141)
at java.awt.Component.dispatchEvent(Component.java:4446)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4663)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4326)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4256)
at java.awt.Container.dispatchEventImpl(Container.java:2127)
at java.awt.Window.dispatchEventImpl(Window.java:2612)
at java.awt.Component.dispatchEvent(Component.java:4446)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:605)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:286)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:191)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:186)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:139)
