java.lang.NullPointerException
   at java.util.Arrays$ArrayList.<init>(Arrays.java:3357)
   at java.util.Arrays.asList(Arrays.java:3343)
   at org.netbeans.api.java.classpath.GlobalPathRegistry.unregister(GlobalPathRegistry.java:223)
   at com.googlecode.ivybeans.module.ProjectOpenedHookImpl.projectClosed(ProjectOpenedHookImpl.java:53)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:87)
   at org.netbeans.spi.project.ui.support.UILookupMergerSupport$OpenHookImpl.projectClosed(UILookupMergerSupport.java:213)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:87)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyClosed(OpenProjectList.java:1125)
   at org.netbeans.modules.project.ui.OpenProjectList.access$1400(OpenProjectList.java:132)
   at org.netbeans.modules.project.ui.OpenProjectList$5.run(OpenProjectList.java:818)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)