Cannot launch code - run button disabled

[danrubel]

May be related to http://code.google.com/p/dart/issues/detail?id=1079

[user feedback]
I'd like to be able to "Run" my code. But on Linux the "Run" button is disabled/greyed out, and I can't press it. What do I need to do to enable it?

////////////////////////////////////////////////////////////////////////////////////
Editor Version: 3413
OS: Linux - i386 (3.0.0-15-generic)
////////////////////////////////////////////////////////////////////////////////////

!SESSION 2012-01-18 21:42:31.858 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_23
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Command-line arguments: -os linux -ws gtk -arch x86 -consoleLog -data workspace

!ENTRY com.google.dart.tools.core 4 0 2012-01-18 22:14:18.048
!MESSAGE Cannot get resource associated with non-absolute URI: TestingGrounds/TestingGrounds.dart
!STACK 0
java.lang.Exception
       at com.google.dart.tools.core.internal.util.ResourceUtil.getResources(ResourceUtil.java:131)
       at com.google.dart.tools.core.internal.util.ResourceUtil.getResource(ResourceUtil.java:94)
       at com.google.dart.tools.core.internal.model.CompilationUnitImpl.<init>(CompilationUnitImpl.java:862)
       at com.google.dart.tools.core.internal.model.DartLibraryImpl.getCompilationUnit(DartLibraryImpl.java:312)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.contentChanged_fileDirectives(DeltaProcessor.java:504)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.contentChanged(DeltaProcessor.java:430)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.updateCurrentDelta(DeltaProcessor.java:1439)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.traverseDelta(DeltaProcessor.java:1340)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.traverseDelta(DeltaProcessor.java:1362)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.processResourceDelta(DeltaProcessor.java:1268)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessor.resourceChanged(DeltaProcessor.java:319)
       at com.google.dart.tools.core.internal.model.delta.DeltaProcessingState.resourceChanged(DeltaProcessingState.java:317)
       at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
       at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
       at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
       at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
       at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
       at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1530)
       at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2353)
       at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
       at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:75)
       at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:65)
       at org.eclipse.ui.editors.text.TextFileDocumentProvider.executeOperation(TextFileDocumentProvider.java:456)
       at org.eclipse.ui.editors.text.TextFileDocumentProvider.saveDocument(TextFileDocumentProvider.java:772)
       at org.eclipse.ui.texteditor.AbstractTextEditor.performSave(AbstractTextEditor.java:5048)
       at com.google.dart.tools.ui.internal.text.editor.CompilationUnitEditor.performSave(CompilationUnitEditor.java:1759)
       at com.google.dart.tools.ui.internal.text.editor.CompilationUnitEditor.doSave(CompilationUnitEditor.java:1215)
       at org.eclipse.ui.texteditor.AbstractTextEditor$TextEditorSavable.doSave(AbstractTextEditor.java:7177)
       at org.eclipse.ui.Saveable.doSave(Saveable.java:214)
       at org.eclipse.ui.internal.SaveableHelper.doSaveModel(SaveableHelper.java:349)
       at org.eclipse.ui.internal.SaveableHelper$3.run(SaveableHelper.java:195)
       at org.eclipse.ui.internal.SaveableHelper$5.run(SaveableHelper.java:277)
       at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
       at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
       at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:759)
       at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
       at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:756)
       at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2642)
       at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(SaveableHelper.java:285)
       at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(SaveableHelper.java:264)
       at org.eclipse.ui.internal.SaveableHelper.saveModels(SaveableHelper.java:207)
       at org.eclipse.ui.internal.SaveableHelper.savePart(SaveableHelper.java:144)
       at org.eclipse.ui.internal.EditorManager.savePart(EditorManager.java:1399)
       at org.eclipse.ui.internal.WorkbenchPage.savePart(WorkbenchPage.java:3416)
       at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPage.java:3429)
       at org.eclipse.ui.internal.handlers.SaveHandler.execute(SaveHandler.java:54)
       at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
       at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
       at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
       at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
       at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
       at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157)
       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$6.handleEvent(ActionContributionItem.java:452)
       at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
       at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
       at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3588)
       at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3209)
       at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
       at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
       at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
       at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
       at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
       at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
       at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
       at com.google.dart.tools.deploy.DartIDEApplication.start(DartIDEApplication.java:44)
       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:344)
       at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
       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:616)
       at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
       at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
       at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

!ENTRY com.google.dart.tools.core 4 0 2012-01-18 22:16:51.783
!MESSAGE Could not find compilation unit corresponding to TestingGrounds/TestingGrounds.dart (resource mapped to a com.google.dart.tools.core.internal.model.DartLibraryImpl)

!ENTRY com.google.dart.tools.core 4 0 2012-01-18 22:17:04.634
!MESSAGE Could not find compilation unit corresponding to TestingGrounds/TestingGrounds.dart (resource mapped to a com.google.dart.tools.core.internal.model.DartLibraryImpl)

[devoncarew]

Added Duplicate label.
Marked as being merged into #807.