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java.lang.ClassNotFoundException: org.apache.commons.collections.Predicate	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)	at java.lang.ClassLoader.loadClass(Unknown Source)	at org.springsource.ide.eclipse.commons.internal.core.commandhistory.CommandHistory.validEntries(CommandHistory.java:336)	at org.springsource.ide.eclipse.commons.internal.core.commandhistory.CommandHistory.getRecentValid(CommandHistory.java:160)	at org.grails.ide.eclipse.ui.internal.inplace.GrailsRunToolbarAction.selectionChanged(GrailsRunToolbarAction.java:94)	at org.eclipse.ui.internal.PluginAction.refreshEnablement(PluginAction.java:206)	at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:277)	at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:299)	at org.eclipse.ui.internal.e4.compatibility.SelectionService.notifyListeners(SelectionService.java:154)	at org.eclipse.ui.internal.e4.compatibility.SelectionService.access$3(SelectionService.java:151)	at org.eclipse.ui.internal.e4.compatibility.SelectionService$1.selectionChanged(SelectionService.java:74)	at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$2.run(SelectionAggregator.java:119)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.notifyListeners(SelectionAggregator.java:117)	at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.access$5(SelectionAggregator.java:114)	at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$7$1.run(SelectionAggregator.java:216)	at org.eclipse.e4.core.contexts.RunAndTrack.runExternalCode(RunAndTrack.java:53)	at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$7.changed(SelectionAggregator.java:214)	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:110)	at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:328)	at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:342)	at org.eclipse.e4.ui.internal.workbench.SelectionServiceImpl.setSelection(SelectionServiceImpl.java:30)	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.selectionChanged(CompatibilityPart.java:433)	at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:164)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)	at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:162)	at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2188)	at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1211)	at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1241)	at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:239)	at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:233)	at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:403)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1053)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:942)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)	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:353)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)