java.lang.NullPointerException
   at org.eclipse.core.internal.net.ProxyManager.getPluggedInAuthenticator(ProxyManager.java:390)
   at org.eclipse.core.internal.net.ProxyManager.registerAuthenticator(ProxyManager.java:383)
   at org.eclipse.core.internal.net.ProxyManager.initialize(ProxyManager.java:284)
   at org.eclipse.core.internal.net.Activator.start(Activator.java:179)
   at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
Caused: org.osgi.framework.BundleException: Exception in org.eclipse.core.internal.net.Activator.start() of bundle org.eclipse.core.net.
   at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:806)
   at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)
   at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:370)
   at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284)
   at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
   at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
Caused: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.net (45).
   at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:121)
   at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
   at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
   at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
   at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:33)
   at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:466)
   at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
   at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
   at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Caused: java.lang.NoClassDefFoundError: org/eclipse/core/net/proxy/IProxyService
   at org.eclipse.mylyn.internal.commons.net.CommonsNetPlugin.start(CommonsNetPlugin.java:91)
   at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
Caused: org.osgi.framework.BundleException: Exception in org.eclipse.mylyn.internal.commons.net.CommonsNetPlugin.start() of bundle org.eclipse.mylyn.commons.net.
   at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:806)
   at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)
   at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:370)
   at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:374)
   at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1067)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:561)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:546)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:459)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
   at org.eclipse.osgi.framework.internal.core.EquinoxLauncher.internalStart(EquinoxLauncher.java:281)
   at org.eclipse.osgi.framework.internal.core.EquinoxLauncher.start(EquinoxLauncher.java:251)
   at org.eclipse.osgi.launch.Equinox.start(Equinox.java:256)
   at org.netbeans.core.netigso.Netigso.start(Netigso.java:172)
   at org.netbeans.NetigsoFramework.startFramework(NetigsoFramework.java:251)
   at org.netbeans.ModuleManager.enable(ModuleManager.java:1081)
   at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:340)
   at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:276)
   at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:294)
   at org.netbeans.core.startup.Main.getModuleSystem(Main.java:172)
   at org.netbeans.core.startup.Main.start(Main.java:308)
   at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:123)
   at java.lang.Thread.run(Thread.java:680)