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    via Stack Overflow by ERJAN

    This exception occurs when using an older version of java. Mainly when trying to run a jar compiled with a newer Java version in an older Java version. We can avoid this issue by executing the jar in the same version which it was compiled.

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via pydev by nobody
, 1 year ago
The activator org.python.pydev.plugin.PydevPlugin for bundle org.python.pydev is invalid
via Spring JIRA by Imported, 1 year ago
The activator org.springframework.ide.eclipse.beans.ui.editor.BeansEditorPlugin for bundle org.springframework.ide.eclipse.beans.ui.editor is invalid
via Spring JIRA by Imported, 2 years ago
The activator org.springframework.ide.eclipse.beans.ui.editor.BeansEditorPlugin for bundle org.springframework.ide.eclipse.beans.ui.editor is invalid
via Oracle Community by 666705, 2 years ago
The activator org.eclipse.ui.internal.ide.IDEWorkbenchPlugin for bundle org.eclipse.ui.ide is invalid
via Oracle Community by 666705, 2 years ago
The activator org.eclipse.ui.internal.ide.IDEWorkbenchPlugin for bundle org.eclipse.ui.ide is invalid
org.osgi.framework.BundleException: The activator org.python.pydev.plugin.PydevPlugin for bundle org.python.pydev is invalid at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:151) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:965) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:321) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:266) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:116) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:389) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1259) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:152) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48) at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:240) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:236) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceNode.createPage(WorkbenchPreferenceNode.java:46) at org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.java:1211) at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(FilteredPreferenceDialog.java:238) at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1114) at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:351) at org.eclipse.jface.preference.PreferenceDialog$8.selectionChanged(PreferenceDialog.java:638) at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:763) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148) at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:761) at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1042) at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1062) at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:231) at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:226) at org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:392) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:2844) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2575) at org.eclipse.jface.window.Window.runEventLoop(Window.java:809) at org.eclipse.jface.window.Window.open(Window.java:787) at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:66) at org.eclipse.jface.action.Action.runWithEvent(Action.java:996) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1021) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2867) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2572) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334) at org.eclipse.core.launcher.Main.basicRun(Main.java:278) at org.eclipse.core.launcher.Main.run(Main.java:973) at org.eclipse.core.launcher.Main.main(Main.java:948)Caused by: java.lang.UnsupportedClassVersionError: org/python/pydev/plugin/PydevPlugin (Unsupported major.minor version 49.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:539) at org.eclipse.osgi.framework.adaptor.core.DefaultClassLoader.defineClass(DefaultClassLoader.java:370) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.defineClass(EclipseClassLoader.java:227) at org.eclipse.osgi.framework.adaptor.core.DefaultClassLoader.findClassImpl(DefaultClassLoader.java:343) at org.eclipse.osgi.framework.adaptor.core.DefaultClassLoader.findClass(DefaultClassLoader.java:235) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.findLocalClass(AbstractClassLoader.java:183) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.basicFindLocalClass(EclipseClassLoader.java:141) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:82) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:389) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:144) ... 67 more