java.lang.NullPointerException
        at org.netbeans.modules.projectimport.eclipse.core.UpgradableProject.getWorkspace(UpgradableProject.java:130)
        at org.netbeans.modules.projectimport.eclipse.core.UpdateAllProjects.resolveNewRequiredProjects(UpdateAllProjects.java:124)
        at org.netbeans.modules.projectimport.eclipse.core.UpdateAllProjects.update(UpdateAllProjects.java:221)
        at org.netbeans.modules.projectimport.eclipse.core.ProjectOpenHookImpl$RunnableImpl.run(ProjectOpenHookImpl.java:97)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)