java.lang.NullPointerException
        at org.netbeans.modules.apisupport.project.NbModuleProject.getModuleList(NbModuleProject.java:515)
        at org.netbeans.modules.apisupport.project.Evaluator$2.run(Evaluator.java:223)
        at org.netbeans.modules.apisupport.project.Evaluator$2.run(Evaluator.java:220)
        at org.openide.util.Mutex.readAccess(Mutex.java:0)
        at org.netbeans.modules.apisupport.project.Evaluator.reset(Evaluator.java:219)
        at org.netbeans.modules.apisupport.project.Evaluator.access$100(Evaluator.java:96)
        at org.netbeans.modules.apisupport.project.Evaluator$1.run(Evaluator.java:207)
        at org.netbeans.modules.apisupport.project.Evaluator$1.run(Evaluator.java:204)
        at org.openide.util.Mutex.readAccess(Mutex.java:0)
        at org.netbeans.modules.apisupport.project.Evaluator.delegatingEvaluator(Evaluator.java:203)
        at org.netbeans.modules.apisupport.project.Evaluator.evaluate(Evaluator.java:162)
        at org.netbeans.modules.apisupport.project.NbModuleProject.getModuleJarLocation(NbModuleProject.java:415)
        at org.netbeans.modules.apisupport.project.queries.ClassPathProviderImpl.findClassPath(ClassPathProviderImpl.java:112)
        at org.netbeans.modules.apisupport.project.queries.ClassPathProviderImpl.getProjectClassPaths(ClassPathProviderImpl.java:383)
        at org.netbeans.modules.apisupport.project.NbModuleProject.open(NbModuleProject.java:706)
        at org.netbeans.modules.apisupport.project.NbModuleProject$OpenedHook.projectOpened(NbModuleProject.java:659)
        at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:0)
        at org.netbeans.spi.project.ui.support.UILookupMergerSupport$OpenHookImpl.projectOpened(UILookupMergerSupport.java:0)
        at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:0)
        at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:0)
        at org.netbeans.modules.project.ui.OpenProjectList.doOpenProject(OpenProjectList.java:0)
        at org.netbeans.modules.project.ui.OpenProjectList.doOpen(OpenProjectList.java:0)
        at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:0)
        at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:0)
        at org.netbeans.modules.project.ui.OpenProjectsTrampolineImpl.openAPI(OpenProjectsTrampolineImpl.java:0)
        at org.netbeans.api.project.ui.OpenProjects.open(OpenProjects.java:0)
        at org.netbeans.modules.apisupport.project.ui.ModulesNodeFactory$OpenProjectAction$1.run(ModulesNodeFactory.java:355)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:0)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:0)