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java.lang.NullPointerException: 	at org.eclipse.core.runtime.Path.append(Unknown Source)	at com.atlassw.tools.eclipse.checkstyle.config.configtypes.RemoteConfigurationType.writeToCacheFile(RemoteConfigurationType.java:284)	at com.atlassw.tools.eclipse.checkstyle.config.configtypes.RemoteConfigurationType.getCheckstyleConfiguration(RemoteConfigurationType.java:159)	at com.atlassw.tools.eclipse.checkstyle.config.CheckConfigurationWorkingCopy.getCheckstyleConfiguration(CheckConfigurationWorkingCopy.java:420)	at com.atlassw.tools.eclipse.checkstyle.config.gui.CheckConfigurationWorkingSetEditor.configureCheckConfig(CheckConfigurationWorkingSetEditor.java:515)	at com.atlassw.tools.eclipse.checkstyle.config.gui.CheckConfigurationWorkingSetEditor.access$800(CheckConfigurationWorkingSetEditor.java:77)	at com.atlassw.tools.eclipse.checkstyle.config.gui.CheckConfigurationWorkingSetEditor$PageController.widgetSelected(CheckConfigurationWorkingSetEditor.java:382)	at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)	at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)	at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)	at org.eclipse.jface.window.Window.runEventLoop(Unknown Source)	at org.eclipse.jface.window.Window.open(Unknown Source)	at org.eclipse.ui.internal.OpenPreferencesAction.run(Unknown Source)	at org.eclipse.jface.action.Action.runWithEvent(Unknown Source)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(Unknown Source)	at org.eclipse.jface.action.ActionContributionItem.access$2(Unknown Source)	at org.eclipse.jface.action.ActionContributionItem$7.handleEvent(Unknown Source)	at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)	at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)	at org.eclipse.ui.internal.Workbench.runEventLoop(Unknown Source)	at org.eclipse.ui.internal.Workbench.runUI(Unknown Source)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Unknown Source)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(Unknown Source)	at org.eclipse.ui.internal.ide.IDEApplication.run(Unknown Source)	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Unknown Source)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)	at java.lang.reflect.Method.invoke(Method.java:391)	at org.eclipse.core.launcher.Main.basicRun(Main.java:185)	at org.eclipse.core.launcher.Main.run(Main.java:704)	at org.eclipse.core.launcher.Main.main(Main.java:688)