This only happens in Window the Linux JBDS works fine. Using the attached xml file, trying importing it as a File source. At the XML File Data Import options, try to select the rss > channel > item > tns:StoreId and click Add to move it to the columns box. It won't do it and gives the below error in the log

!ENTRY org.eclipse.ui 4 0 2014-08-07 10:24:35.234
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NullPointerException
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.getName(TeiidXmlColumnInfo.java:212)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.validate(TeiidXmlColumnInfo.java:466)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.setRelativePath(TeiidXmlColumnInfo.java:290)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.setRelativePathInternal(TeiidXmlColumnInfo.java:300)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.<init>(TeiidXmlColumnInfo.java:141)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.<init>(TeiidXmlColumnInfo.java:95)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlFileInfo.addNewColumn(TeiidXmlFileInfo.java:277)
at org.teiid.designer.transformation.ui.wizards.xmlfile.panels.XmlFileContentsGroup.createColumn(XmlFileContentsGroup.java:174)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlImportXmlConfigurationPage.createColumn(TeiidXmlImportXmlConfigurationPage.java:233)
at org.teiid.designer.transformation.ui.wizards.xmlfile.panels.ColumnsInfoPanel$2.widgetSelected(ColumnsInfoPanel.java:112)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:826)
at org.eclipse.jface.window.Window.open(Window.java:802)
at org.eclipse.ui.internal.handlers.WizardHandler$Import.executeHandler(WizardHandler.java:152)
at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:279)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:290)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:243)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:224)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:167)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:213)
at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:420)
at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157)
at org.eclipse.ui.internal.actions.CommandAction.run(CommandAction.java:171)
at org.eclipse.ui.actions.ImportResourcesAction.run(ImportResourcesAction.java:97)
at org.eclipse.ui.actions.BaseSelectionListenerAction.runWithEvent(BaseSelectionListenerAction.java:168)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:140)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)

!ENTRY org.eclipse.ui 4 0 2014-08-07 10:25:54.277
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NullPointerException
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.getName(TeiidXmlColumnInfo.java:212)
at org.teiid.designer.transformation.ui.wizards.xmlfile.TeiidXmlColumnInfo.validate(TeiidXmlColumnInfo.java:466)