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:220)
   at com.googlecode.ivybeans.module.ProjectOpenedHookImpl.projectClosed(ProjectOpenedHookImpl.java:53)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:84)
   at org.netbeans.spi.project.ui.support.UILookupMergerSupport$OpenHookImpl.projectClosed(UILookupMergerSupport.java:210)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:84)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyClosed(OpenProjectList.java:1117)
   at org.netbeans.modules.project.ui.OpenProjectList.access$1300(OpenProjectList.java:129)
   at org.netbeans.modules.project.ui.OpenProjectList$5.run(OpenProjectList.java:810)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1369)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1907)