java.lang.ClassCastException: org.netbeans.api.project.ProjectUtils$AnnotateIconProxyProjectInformation cannot be cast to org.netbeans.modules.scala.project.J2SEProject$Info
   at org.netbeans.modules.scala.project.J2SEProject.configurationXmlChanged(J2SEProject.java:344)
   at org.netbeans.spi.project.support.ant.AntProjectHelper$3.run(AntProjectHelper.java:509)
   at org.netbeans.spi.project.support.ant.AntProjectHelper$3.run(AntProjectHelper.java:504)
   at org.openide.util.Mutex.readAccess(Mutex.java:290)
   at org.netbeans.spi.project.support.ant.AntProjectHelper.fireChange(AntProjectHelper.java:504)
   at org.netbeans.spi.project.support.ant.AntProjectHelper.modifying(AntProjectHelper.java:530)
   at org.netbeans.spi.project.support.ant.AntProjectHelper.access$900(AntProjectHelper.java:113)
   at org.netbeans.spi.project.support.ant.AntProjectHelper$10.run(AntProjectHelper.java:971)
   at org.netbeans.spi.project.support.ant.AntProjectHelper$10.run(AntProjectHelper.java:944)
   at org.openide.util.Mutex.writeAccess(Mutex.java:399)
   at org.netbeans.spi.project.support.ant.AntProjectHelper.putConfigurationFragment(AntProjectHelper.java:944)
   at org.netbeans.spi.project.support.ant.AntProjectHelper.putPrimaryConfigurationData(AntProjectHelper.java:833)
   at org.netbeans.modules.java.api.common.ant.UpdateHelper$4.run(UpdateHelper.java:162)
   at org.openide.util.Mutex.writeAccess(Mutex.java:474)
   at org.netbeans.modules.java.api.common.ant.UpdateHelper.putPrimaryConfigurationData(UpdateHelper.java:159)
   at org.netbeans.modules.java.api.common.SourceRoots$7.run(SourceRoots.java:411)
   at org.openide.util.Mutex.writeAccess(Mutex.java:474)
   at org.netbeans.modules.java.api.common.SourceRoots.putRoots(SourceRoots.java:343)
   at org.netbeans.modules.scala.project.ui.customizer.J2SEProjectProperties.storeRoots(J2SEProjectProperties.java:627)
   at org.netbeans.modules.scala.project.ui.customizer.J2SEProjectProperties.storeProperties(J2SEProjectProperties.java:494)
   at org.netbeans.modules.scala.project.ui.customizer.J2SEProjectProperties.access$000(J2SEProjectProperties.java:106)
   at org.netbeans.modules.scala.project.ui.customizer.J2SEProjectProperties$1.run(J2SEProjectProperties.java:435)
   at org.netbeans.modules.scala.project.ui.customizer.J2SEProjectProperties$1.run(J2SEProjectProperties.java:433)
   at org.openide.util.Mutex.writeAccess(Mutex.java:438)
   at org.netbeans.modules.scala.project.ui.customizer.J2SEProjectProperties.save(J2SEProjectProperties.java:433)
   at org.netbeans.modules.scala.project.ui.customizer.CustomizerProviderImpl$OptionListener.actionPerformed(CustomizerProviderImpl.java:158)
   at org.netbeans.modules.project.uiapi.CustomizerDialog$OptionListener$1.run(CustomizerDialog.java:270)
   at org.openide.util.Mutex.writeAccess(Mutex.java:399)
   at org.netbeans.modules.project.uiapi.CustomizerDialog$OptionListener.actionPerformed(CustomizerDialog.java:268)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
   at java.awt.Component.processMouseEvent(Component.java:6505)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
   at java.awt.Component.processEvent(Component.java:6270)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:682)
   at java.awt.EventQueue$3.run(EventQueue.java:680)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:696)
   at java.awt.EventQueue$4.run(EventQueue.java:694)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)