java.lang.ClassNotFoundException

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  • Erlang preference page error in in Eclipse
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    • java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.erlide.ui (961). at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:116) at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:531) at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:324) at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:327) at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:402) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:352) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:344) at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:573) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55) at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:294) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52) at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:289) at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition$1.run(LightweightDecoratorDefinition.java:125) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.internalGetDecorator(LightweightDecoratorDefinition.java:120) at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.decorate(LightweightDecoratorDefinition.java:255) at org.eclipse.ui.internal.decorators.LightweightDecoratorManager$LightweightRunnable.run(LightweightDecoratorManager.java:83) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.decorate(LightweightDecoratorManager.java:367) at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.getDecorations(LightweightDecoratorManager.java:349) at org.eclipse.ui.internal.decorators.DecorationScheduler$1.ensureResultCached(DecorationScheduler.java:372) at org.eclipse.ui.internal.decorators.DecorationScheduler$1.run(DecorationScheduler.java:332) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: org.osgi.framework.BundleException: Error starting module. at org.eclipse.osgi.container.Module.doStart(Module.java:580) at org.eclipse.osgi.container.Module.start(Module.java:439) at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454) at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107) ... 27 more Caused by: java.lang.NoClassDefFoundError: org/erlide/backend/api/IBackendListener at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2585) at java.lang.Class.getConstructor0(Class.java:2885) at java.lang.Class.newInstance(Class.java:350) at org.eclipse.osgi.internal.framework.BundleContextImpl.loadBundleActivator(BundleContextImpl.java:755) at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:706) at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:941) at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:318) at org.eclipse.osgi.container.Module.doStart(Module.java:571) ... 30 more Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.erlide.backend (944). at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:116) at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:531) at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:324) at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:327) at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:36) at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:398) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:352) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:344) at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ... 39 more Caused by: org.osgi.framework.BundleException: Exception in org.erlide.backend.internal.BackendActivator.start() of bundle org.erlide.backend. at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:792) at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:721) at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:941) at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:318) at org.eclipse.osgi.container.Module.doStart(Module.java:571) at org.eclipse.osgi.container.Module.start(Module.java:439) at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454) at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107) ... 48 more Caused by: java.lang.NullPointerException at org.erlide.runtime.runtimeinfo.RuntimeFinder.findRuntime(RuntimeFinder.java:118) at org.erlide.runtime.runtimeinfo.RuntimeFinder.guessRuntimeLocations(RuntimeFinder.java:40) at org.erlide.runtime.runtimeinfo.RuntimeInfoCatalog.initializeRuntimesList(RuntimeInfoCatalog.java:187) at org.erlide.runtime.runtimeinfo.RuntimeInfoCatalog.setRuntimes(RuntimeInfoCatalog.java:46) at org.erlide.runtime.api.RuntimeCore.getRuntimeInfoCatalog(RuntimeCore.java:21) at org.erlide.backend.BackendCore.getRuntimeInfoCatalog(BackendCore.java:28) at org.erlide.backend.internal.BackendActivator.start(BackendActivator.java:21) at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:771) at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:764) ... 55 more
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