Should Eclipse Checkstyle plugin be removed from JBT4.1/JBDS7 Central?

!ENTRY net.sf.eclipsecs.ui 4 0 2013-06-19 12:42:54.788
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: Exception in net.sf.eclipsecs.ui.CheckstyleUIPlugin.stop() of bundle net.sf.eclipsecs.ui.
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:791)
	at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:566)
	at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1206)
	at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:592)
	at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
	at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
	at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
	at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:692)
	at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:600)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:400)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:200)
	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:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Caused by: java.lang.ExceptionInInitializerError
	at net.sf.eclipsecs.ui.CheckstyleUIPlugin.stop(CheckstyleUIPlugin.java:121)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
	... 19 more
Caused by: java.lang.NullPointerException
	at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)
	at net.sf.eclipsecs.ui.CheckstyleUIPluginImages.<clinit>(CheckstyleUIPluginImages.java:95)
	... 23 more
Root exception:
java.lang.ExceptionInInitializerError
	at net.sf.eclipsecs.ui.CheckstyleUIPlugin.stop(CheckstyleUIPlugin.java:121)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
	at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:566)
	at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1206)
	at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:592)
	at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
	at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
	at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
	at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:692)
	at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:600)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:400)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:200)
	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:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Caused by: java.lang.NullPointerException
	at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)
	at net.sf.eclipsecs.ui.CheckstyleUIPluginImages.<clinit>(CheckstyleUIPluginImages.java:95)
	... 23 more