java.lang.AssertionError
   at org.netbeans.modules.cnd.makeproject.configurations.ConfigurationMakefileWriter.writeProCTargets(ConfigurationMakefileWriter.java:1154)
   at org.netbeans.modules.cnd.makeproject.configurations.ConfigurationMakefileWriter.writeCompileTargets(ConfigurationMakefileWriter.java:850)
   at org.netbeans.modules.cnd.makeproject.api.configurations.DefaultMakefileWriter.writeCompileTargets(DefaultMakefileWriter.java:111)
   at org.netbeans.modules.cnd.makeproject.configurations.ConfigurationMakefileWriter.writeBuildTargets(ConfigurationMakefileWriter.java:530)
   at org.netbeans.modules.cnd.makeproject.configurations.ConfigurationMakefileWriter.writeMakefileConf(ConfigurationMakefileWriter.java:329)
   at org.netbeans.modules.cnd.makeproject.configurations.ConfigurationMakefileWriter.write(ConfigurationMakefileWriter.java:121)
   at org.netbeans.modules.cnd.makeproject.api.configurations.MakeConfigurationDescriptor.saveWorker(MakeConfigurationDescriptor.java:771)
   at org.netbeans.modules.cnd.makeproject.api.configurations.MakeConfigurationDescriptor.access$100(MakeConfigurationDescriptor.java:112)
   at org.netbeans.modules.cnd.makeproject.api.configurations.MakeConfigurationDescriptor$SaveRunnable.run(MakeConfigurationDescriptor.java:703)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.netbeans.modules.cnd.utils.ui.ModalMessageDlg$WindowAdapterImpl$1.runImpl(ModalMessageDlg.java:265)
   at org.netbeans.modules.cnd.utils.NamedRunnable.run(NamedRunnable.java:62)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:425)
   at org.netbeans.modules.cnd.utils.ui.ModalMessageDlg$WindowAdapterImpl.submitJob(ModalMessageDlg.java:260)
   at org.netbeans.modules.cnd.utils.ui.ModalMessageDlg$WindowAdapterImpl.windowOpened(ModalMessageDlg.java:256)
   at java.awt.Window.processWindowEvent(Window.java:1862)
   at javax.swing.JDialog.processWindowEvent(JDialog.java:627)
   at java.awt.Window.processEvent(Window.java:1823)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
   at java.awt.Dialog$1.run(Dialog.java:1046)
   at java.awt.Dialog$3.run(Dialog.java:1098)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.Dialog.show(Dialog.java:1096)
   at java.awt.Component.show(Component.java:1563)
   at java.awt.Component.setVisible(Component.java:1515)
   at java.awt.Window.setVisible(Window.java:842)
   at java.awt.Dialog.setVisible(Dialog.java:986)
   at org.netbeans.modules.cnd.utils.ui.ModalMessageDlg.runLongTaskImpl(ModalMessageDlg.java:197)
   at org.netbeans.modules.cnd.utils.ui.ModalMessageDlg.runLongTask(ModalMessageDlg.java:90)
   at org.netbeans.modules.cnd.makeproject.api.configurations.MakeConfigurationDescriptor.save(MakeConfigurationDescriptor.java:657)
   at org.netbeans.modules.cnd.makeproject.api.configurations.MakeConfigurationDescriptor.save(MakeConfigurationDescriptor.java:649)
   at org.netbeans.modules.cnd.makeproject.api.MakeCustomizerProvider$OptionListener.actionPerformed(MakeCustomizerProvider.java:283)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
   at java.awt.Component.processMouseEvent(Component.java:6263)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6028)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
   at java.awt.Dialog$1.run(Dialog.java:1046)
   at java.awt.Dialog$3.run(Dialog.java:1098)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.Dialog.show(Dialog.java:1096)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1006)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1040)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1028)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:121)
   at org.openide.util.Mutex$1AWTWorker.run(Mutex.java:1377)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)