[rules-users] Error opening dslr in Eclipse on Mac

Hi, I am running Eclipse Helios on Mac OS X 10.6.7 with the Drools 5.1.1 plugin and cannot open DSLR files with the error below. This error also occurs if I create a new Drools project, create a new rule resource and select the Use a DSL checkbox. DRL files open fine. Could not open the editor: 1 java.lang.ArrayIndexOutOfBoundsException: 1 at org.eclipse.swt.custom.StyledTextRenderer.calculateClientArea(StyledTextRenderer.java:230) at org.eclipse.swt.custom.StyledText.handleResize(StyledText.java:6169) at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5662) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3783) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1375) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1398) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1379) at org.eclipse.swt.widgets.Control.resized(Control.java:2944) at org.eclipse.swt.widgets.Composite.resized(Composite.java:929) at org.eclipse.swt.widgets.Control.setFrameSize(Control.java:3428) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4975) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSView.setFrameSize(NSView.java:259) at org.eclipse.swt.widgets.Control.setBounds(Control.java:3171) at org.eclipse.swt.widgets.Control.setSize(Control.java:3668) at org.eclipse.jface.text.source.SourceViewer$RulerLayout.getVerticalScrollArrowHeights(SourceViewer.java:200) at org.eclipse.jface.text.source.SourceViewer$RulerLayout.layout(SourceViewer.java:157) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1183) at org.eclipse.swt.widgets.Composite.layout(Composite.java:703) at org.eclipse.swt.widgets.Composite.layout(Composite.java:661) at org.eclipse.jface.text.source.CompositeRuler.layoutTextViewer(CompositeRuler.java:611) at org.eclipse.jface.text.source.CompositeRuler.addDecorator(CompositeRuler.java:565) at org.eclipse.jface.text.source.projection.ProjectionViewer.addVerticalRulerColumn(ProjectionViewer.java:1289) at org.eclipse.jface.text.source.projection.ProjectionSupport.doEnableProjection(ProjectionSupport.java:310) at org.eclipse.jface.text.source.projection.ProjectionSupport$ProjectionListener.projectionEnabled(ProjectionSupport.java:143) at org.eclipse.jface.text.source.projection.ProjectionViewer.fireProjectionEnabled(ProjectionViewer.java:489) at org.eclipse.jface.text.source.projection.ProjectionViewer.enableProjection(ProjectionViewer.java:537) at org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation(ProjectionViewer.java:1441) at org.drools.eclipse.editors.AbstractRuleEditor.createPartControl(Unknown Source) at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:241) at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:325) at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:211) at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:308) at org.drools.eclipse.dsl.editor.DSLRuleEditor2.addPages(Unknown Source) at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:138) at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:348) at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:670) at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595) at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:289) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2863) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2768) at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2760) at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2711) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2707) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2691) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2682) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610) at org.drools.eclipse.wizard.rule.NewRulePackagePage.finish(Unknown Source) at org.drools.eclipse.wizard.rule.NewRulePackageWizard.performFinish(Unknown Source) at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:811) at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:430) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3783) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1375) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1398) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1383) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1195) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3629) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3284) at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) at org.eclipse.jface.window.Window.open(Window.java:801) at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:254) at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:274) 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$5.handleEvent(ActionContributionItem.java:411) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3783) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1375) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1398) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1383) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1195) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3629) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3284) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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:369) 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:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575) at org.eclipse.equinox.launcher.Main.run(Main.java:1408) thanks Steve