Petals Studio

I was validating a WSDL file (selected in the Petals project view). I clicked somewhere else and this error came on. Reproduced or not, the command's code should be checked. java.lang.NullPointerException at com.ebmwebsourcing.petals.common.internal.commands.ConfigureBuildPathCommandHandler.setEnabled(ConfigureBuildPathCommandHandler.java:80) at org.eclipse.ui.internal.handlers.HandlerProxy.setEnabled(HandlerProxy.java:232) at org.eclipse.core.commands.Command.setEnabled(Command.java:857) at org.eclipse.ui.menus.CommandContributionItem.isEnabled(CommandContributionItem.java:977) at org.eclipse.ui.menus.CommandContributionItem.isVisible(CommandContributionItem.java:988) at org.eclipse.jface.action.MenuManager.isChildVisible(MenuManager.java:999) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:763) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:682) at org.eclipse.ui.menus.CommandContributionItem$4.run(CommandContributionItem.java:374) at org.eclipse.ui.menus.CommandContributionItem.updateCommandProperties(CommandContributionItem.java:391) at org.eclipse.ui.menus.CommandContributionItem.access$7(CommandContributionItem.java:363) at org.eclipse.ui.menus.CommandContributionItem$3.commandChanged(CommandContributionItem.java:355) at org.eclipse.core.commands.Command$1.run(Command.java:511) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.commands.Command.fireCommandChanged(Command.java:506) at org.eclipse.core.commands.Command.access$0(Command.java:498) at org.eclipse.core.commands.Command$2.handlerChanged(Command.java:1010) at org.eclipse.ui.internal.handlers.LegacyHandlerListenerWrapper.handlerChanged(LegacyHandlerListenerWrapper.java:72) at org.eclipse.ui.commands.AbstractHandler.fireHandlerChanged(AbstractHandler.java:134) at org.eclipse.ui.commands.ActionHandler$1.propertyChange(ActionHandler.java:139) at org.eclipse.jface.action.AbstractAction.firePropertyChange(AbstractAction.java:48) at org.eclipse.jface.action.AbstractAction.firePropertyChange(AbstractAction.java:71) at org.eclipse.jface.action.Action.setEnabled(Action.java:577) at org.eclipse.ui.texteditor.TextOperationAction.update(TextOperationAction.java:155) at org.eclipse.ui.texteditor.AbstractTextEditor.updateAction(AbstractTextEditor.java:5406) at org.eclipse.ui.texteditor.AbstractTextEditor.updateSelectionDependentActions(AbstractTextEditor.java:5479) at org.eclipse.ui.texteditor.AbstractTextEditor$17.run(AbstractTextEditor.java:3123) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757) 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 org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123) 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(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:622) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577) at org.eclipse.equinox.launcher.Main.run(Main.java:1410)