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java.lang.NullPointerException: 	at oracle.dmt.dataminer.runner.RunManager.(RunManager.java:71)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:270)	at oracle.ide.osgi.extension.internal.ClassLoaderProxy.loadMetaClass(ClassLoaderProxy.java:121)	at javax.ide.util.MetaClass.toClass(MetaClass.java:104)	at javax.ide.util.MetaClass.toClass(MetaClass.java:95)	at javax.ide.util.MetaClass.newInstance(MetaClass.java:138)	at oracle.ide.javaxide.Util.createInstance(Util.java:62)	at oracle.ide.javaxide.Util.createInstance(Util.java:42)	at oracle.ideimpl.cmd.ShutdownHookHook.start(ShutdownHookHook.java:30)	at oracle.ideimpl.extension.LayerReader.callElementStart(LayerReader.java:339)	at oracle.ideimpl.extension.LayerReader.scan(LayerReader.java:310)	at oracle.ideimpl.extension.LayerReader.scanChildren(LayerReader.java:290)	at oracle.ideimpl.extension.LayerHookRegistry.scanHooks(LayerHookRegistry.java:343)	at oracle.ideimpl.extension.LayerHookRegistry.loadHooks(LayerHookRegistry.java:278)	at oracle.ideimpl.extension.LayerHookRegistry.fullyLoad(LayerHookRegistry.java:393)	at oracle.ideimpl.extension.ExtensionManagerImpl._loadExtHooksCached(ExtensionManagerImpl.java:2005)	at oracle.ideimpl.extension.ExtensionManagerImpl._loadExtensionHooks(ExtensionManagerImpl.java:1930)	at oracle.ideimpl.extension.ExtensionManagerImpl.__loadExtensionHooks(ExtensionManagerImpl.java:1902)	at oracle.ideimpl.extension.SameThreadExtensionQueueLoadStrategy.load(SameThreadExtensionQueueLoadStrategy.java:28)	at oracle.ideimpl.extension.ExtensionManagerImpl.fullyLoadExtension(ExtensionManagerImpl.java:1651)	at oracle.ide.IdeCore.startupImpl(IdeCore.java:1841)	at oracle.ide.Ide.startup(Ide.java:758)	at oracle.dbtools.headless.HeadlessStarter.startIde(HeadlessStarter.java:32)	at oracle.ide.osgi.Activator.start(Activator.java:190)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)	at java.security.AccessController.doPrivileged(Native Method)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)	at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1177)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)	at org.eclipse.osgi.framework.internal.core.EquinoxLauncher.internalStart(EquinoxLauncher.java:271)	at org.eclipse.osgi.framework.internal.core.EquinoxLauncher.start(EquinoxLauncher.java:241)	at org.eclipse.osgi.launch.Equinox.start(Equinox.java:258)	at org.netbeans.core.netigso.Netigso.start(Netigso.java:190)	at org.netbeans.NetigsoHandle.startFramework(NetigsoHandle.java:198)	at org.netbeans.ModuleManager.enable(ModuleManager.java:1189)	at org.netbeans.ModuleManager.enable(ModuleManager.java:1011)	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:301)	at org.netbeans.core.startup.Main.getModuleSystem(Main.java:181)	at org.netbeans.core.startup.Main.getModuleSystem(Main.java:150)	at org.netbeans.core.startup.Main.start(Main.java:307)	at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:123)	at java.lang.Thread.run(Thread.java:745)