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Description of problem: "Could not open the editor: The editor class could not be instantiated. This usually indicates a missing no-arg constructor or that the editor's class name was mistyped in plugin.xml." I don't believe this is an environment problem, I have removed my .eclipse folder and allowed it to be recreated. However, the workspace folder is from a previous install, so that could possibly be it. Version-Release number of selected component (if applicable): eclipse-platform-3.6.0-3.fc14.x86_64 How reproducible: Not sure if this is, this happened to me by default on a clean install. Additional info: Backtrace: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.python.pydev (564). 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.BundleLoader.findClassInternal(BundleLoader.java:469) 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:266) at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:338) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:232) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1197) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:904) 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:267) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:263) at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:235) at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:845) at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609) at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595) at org.eclipse.ui.internal.EditorAreaHelper.setVisibleEditor(EditorAreaHelper.java:271) at org.eclipse.ui.internal.EditorManager.setVisibleEditor(EditorManager.java:1429) at org.eclipse.ui.internal.EditorManager$5.runWithException(EditorManager.java:942) at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3527) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3174) at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803) at org.eclipse.ui.internal.Workbench$31.runWithException(Workbench.java:1566) at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3527) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3174) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2537) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383) Caused by: org.osgi.framework.BundleException: Exception in org.python.pydev.plugin.PydevPlugin.start() of bundle org.python.pydev. 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) at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106) ... 58 more Caused by: java.lang.NoClassDefFoundError: org/apache/commons/codec/binary/Base64 at org.python.pydev.core.REF.encodeBase64(REF.java:254) at org.python.pydev.ui.pythonpathconf.InterpreterInfo.getExeAsFileSystemValidPath(InterpreterInfo.java:1145) at org.python.pydev.ui.interpreters.AbstractInterpreterManager.getInterpretersFromPersistedString(AbstractInterpreterManager.java:352) at org.python.pydev.ui.interpreters.AbstractInterpreterManager.getInterpreterInfos(AbstractInterpreterManager.java:161) at org.python.pydev.ui.interpreters.AbstractInterpreterManager.<init>(AbstractInterpreterManager.java:106) at org.python.pydev.ui.interpreters.PythonInterpreterManager.<init>(PythonInterpreterManager.java:24) at org.python.pydev.plugin.PydevPlugin.start(PydevPlugin.java:171) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:774) ... 64 more Caused by: java.lang.ClassNotFoundException: org.apache.commons.codec.binary.Base64 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506) 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:266) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334) ... 74 more
Did PyDev editor IDs change?
I'm experiencing this as well in a new F14 install. I updated the RPM to 1.6.1 (not in koji, I'll give you my spec file if you'd like) and I still got the same error. Installing pydev from the update site works fine, so its definitely a bug in the RPM somewhere. If you can point me in the right direction, I can try to fix it if you'd like.
Oh, I should also note that if you switch to the pydev perspective, eclipse barfs all over the place.
This also only occurs if you have an interpreter defined. If no interpreter is defined, no exception is generated.
Ok, root cause is the reworking of the apache-commons-codec and apache-commons-logging packages. This broke symlinks in the package. This RPM upgrades pydev to 1.6.1 and fixes the symlink issues. It also updates the (build)?requires to the new package names. http://npmccallum.fedorapeople.org/fixes/eclipse-pydev-1.6.1-1.fc14.src.rpm http://npmccallum.fedorapeople.org/fixes/eclipse-pydev-1.6.1-1.fc14.x86_64.rpm http://npmccallum.fedorapeople.org/fixes/eclipse-pydev-mylyn-1.6.1-1.fc14.x86_64.rpm http://npmccallum.fedorapeople.org/fixes/eclipse-pydev.spec I'd commit it myself but I don't have access to the eclipse-pydev.
Hi Nathaniel, Just ask in pkgdb and I'll approve you as co-maintainer.
eclipse-pydev-1.6.1-1.fc14 has been submitted as an update for Fedora 14. https://admin.fedoraproject.org/updates/eclipse-pydev-1.6.1-1.fc14
Fixed here: http://koji.fedoraproject.org/koji/buildinfo?buildID=192552 I think this bug will close automatically when bodhi pushes to F14 stable.
Thanks, Nathaniel!
eclipse-pydev-1.6.1-1.fc14 has been pushed to the Fedora 14 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update eclipse-pydev'. You can provide feedback for this update here: https://admin.fedoraproject.org/updates/eclipse-pydev-1.6.1-1.fc14
eclipse-pydev-1.6.1-1.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.