java.lang.NoClassDefFoundError: org/bouncycastle/openpgp/PGPException
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2398)
	at java.lang.Class.getConstructor0(Class.java:2708)
	at java.lang.Class.newInstance0(Class.java:328)
	at java.lang.Class.newInstance(Class.java:310)
	at org.apache.ivy.util.Configurator.addChild(Configurator.java:586)
	at org.apache.ivy.util.Configurator.startCreateChild(Configurator.java:503)
	at org.apache.ivy.core.settings.XmlSettingsParser.inConfiguratorStarted(XmlSettingsParser.java:586)
	at org.apache.ivy.core.settings.XmlSettingsParser.startElement(XmlSettingsParser.java:201)
	at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
	at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)
	at javax.xml.parsers.SAXParser.parse(SAXParser.java:277)
	at org.apache.ivy.core.settings.XmlSettingsParser.doParse(XmlSettingsParser.java:160)
	at org.apache.ivy.core.settings.XmlSettingsParser.parse(XmlSettingsParser.java:150)
	at org.apache.ivy.core.settings.IvySettings.load(IvySettings.java:390)
	at org.apache.ivy.Ivy.configure(Ivy.java:416)
	at org.apache.ivyde.eclipse.internal.CachedIvy.getIvyFromFile(CachedIvy.java:201)
	at org.apache.ivyde.eclipse.internal.CachedIvy.doGetIvy(CachedIvy.java:161)
	at org.apache.ivyde.eclipse.internal.CachedIvy.getIvy(CachedIvy.java:122)
	at org.apache.ivyde.eclipse.resolve.IvyResolveJob.doRun(IvyResolveJob.java:145)
	at org.apache.ivyde.eclipse.resolve.IvyResolveJob.run(IvyResolveJob.java:85)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.openpgp.PGPException cannot be found by org.apache.ivy_2.4.0.alpha_20130728143216
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	... 31 more