on startup of latest nightly I get:

org.osgi.framework.BundleException: Exception in org.jboss.ide.eclipse.archives.webtools.IntegrationPlugin.stop() of bundle org.jboss.ide.eclipse.archives.webtools.
at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:847)
at org.eclipse.osgi.internal.framework.EquinoxBundle.stopWorker0(EquinoxBundle.java:950)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.stopWorker(EquinoxBundle.java:324)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:1623)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1542)
at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:248)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:145)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:186)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:160)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:514)
at org.jboss.ide.eclipse.archives.webtools.SharedImages.<init>(SharedImages.java:37)
at org.jboss.ide.eclipse.archives.webtools.SharedImages.instance(SharedImages.java:47)
at org.jboss.ide.eclipse.archives.webtools.IntegrationPlugin.stop(IntegrationPlugin.java:52)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:827)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:820)
... 13 more
Root exception:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:514)
at org.jboss.ide.eclipse.archives.webtools.SharedImages.<init>(SharedImages.java:37)
at org.jboss.ide.eclipse.archives.webtools.SharedImages.instance(SharedImages.java:47)
at org.jboss.ide.eclipse.archives.webtools.IntegrationPlugin.stop(IntegrationPlugin.java:52)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:827)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:820)
at org.eclipse.osgi.internal.framework.EquinoxBundle.stopWorker0(EquinoxBundle.java:950)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.stopWorker(EquinoxBundle.java:324)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:1623)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1542)
at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:248)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:145)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:186)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:160)
at java.lang.Thread.run(Thread.java:744)