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java.lang.NullPointerException: 	at org.pentaho.vfs.ui.VfsFileChooserDialog.setSelectedFile(VfsFileChooserDialog.java:978)	at org.pentaho.di.ui.vfs.hadoopvfsfilechooserdialog.HadoopVfsFileChooserDialog$3.widgetSelected(HadoopVfsFileChooserDialog.java:233)	at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)	at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)	at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)	at org.pentaho.vfs.ui.VfsFileChooserDialog.open(VfsFileChooserDialog.java:414)	at org.pentaho.vfs.ui.VfsFileChooserDialog.open(VfsFileChooserDialog.java:336)	at org.pentaho.vfs.ui.VfsFileChooserDialog.open(VfsFileChooserDialog.java:328)	at org.pentaho.di.ui.spoon.Spoon.openFileVFSFile(Spoon.java:3964)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:329)	at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:139)	at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:123)	at org.pentaho.ui.xul.jface.tags.JfaceMenuitem.access$100(JfaceMenuitem.java:26)	at org.pentaho.ui.xul.jface.tags.JfaceMenuitem$1.run(JfaceMenuitem.java:85)	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545)	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490)	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:402)	at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)	at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)	at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1221)	at org.pentaho.di.ui.spoon.Spoon.waitForDispose(Spoon.java:7044)	at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:8298)	at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:580)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.pentaho.commons.launcher.Launcher.main(Launcher.java:134)