java.lang.NullPointerException
        at org.netbeans.modules.xml.multiview.XmlMultiViewDataObject$DataCache.createInputStream(XmlMultiViewDataObject.java:510)
        at org.netbeans.modules.j2ee.ddloaders.multiview.DDMultiViewDataObject.createInputStream(DDMultiViewDataObject.java:110)
        at org.netbeans.modules.j2ee.ddloaders.multiview.EjbJarMultiViewDataObject.validateDocument(EjbJarMultiViewDataObject.java:436)
        at org.netbeans.modules.j2ee.ddloaders.multiview.EjbJarMultiViewDataObject.parseDocument(EjbJarMultiViewDataObject.java:431)
        at org.netbeans.modules.j2ee.ddloaders.multiview.EjbJarMultiViewDataObject.getEjbJar(EjbJarMultiViewDataObject.java:216)
        at org.netbeans.modules.j2ee.ddloaders.multiview.EjbJarMultiViewDataObject.getEjbFromEjbClass(EjbJarMultiViewDataObject.java:604)
        at org.netbeans.modules.j2ee.ddloaders.multiview.EjbJarMultiViewDataObject.fireEvent(EjbJarMultiViewDataObject.java:705)
        at org.netbeans.modules.j2ee.ddloaders.multiview.EjbJarMultiViewDataObject.fileDeleted(EjbJarMultiViewDataObject.java:364)
        at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:139)
        at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:122)
        at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:99)
        at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:941)
        at org.openide.filesystems.EventControl.invokeDispatchers(EventControl.java:203)
        at org.openide.filesystems.EventControl.exitAtomicAction(EventControl.java:177)
        at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:122)
        at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:499)
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.refresh(FileObjectFactory.java:657)
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.RootObj.invokeRefreshFor(RootObj.java:181)
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.RootObj.setAttribute(RootObj.java:130)
        at org.openide.filesystems.FileUtil.refreshFor(FileUtil.java:154)
        at org.openide.filesystems.FileUtil.refreshAll(FileUtil.java:167)
        at org.netbeans.core.ui.warmup.MenuWarmUpTask$NbWindowsAdapter.run(MenuWarmUpTask.java:143)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)