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Missing Editor [message #1052925] Wed, 01 May 2013 08:43 Go to next message
Eclipse UserFriend

I am running Ubuntu 13.04 and have installed Eclipse from the respositories.

I then have installed Google Plugin for Eclipse and GWT Designer.

I then get this error message:

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 have searched the Eclipse forums and found nothing. Googling gets someting about it being fixed in older versions of Eclipse and little else of any use.

Anyone got some pointers, please?
Re: Missing Editor [message #1052928 is a reply to message #1052925] Wed, 01 May 2013 09:04 Go to previous messageGo to next message
Eclipse UserFriend
Could you give a few more details to identify the problem, like
- what exact version & package of Eclipse did you install?
- more context of the error message: which editor class is affected, does it show a stack trace etc.
Re: Missing Editor [message #1052947 is a reply to message #1052928] Wed, 01 May 2013 10:19 Go to previous messageGo to next message
Eclipse UserFriend
Hi,

Eclipse Platform Version: 3.8.1 Build id: debbuild

In the tab where the editor appears is the error message I reported above and if I click on the button labelled Details I get the a multi-line message that I cannot post here because this website's editor (here) reports "You can only use links to eclipse.org sites while you have fewer than 5 messages." when I try to submit this post. Previewing this post does not report this. I do not know how to include this.

java.lang.ClassNotFoundException: org.eclipse.wb.internal.core.editor.multi.DesignerEditor
	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:356)
	at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
	at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
	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:268)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:264)
	at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:235)
	at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:875)
	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:1459)
	at org.eclipse.ui.internal.EditorManager$5.runWithException(EditorManager.java:972)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3537)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3189)
	at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
	at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1600)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3537)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3189)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2609)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	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:353)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
	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:601)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1414)


Eclipse does not crash. If I run Eclipse from the terminal, there is no output to the terminal.

Google Plugin for Eclipse comes from here: dl.google.com/eclipse/plugin/4.2

GWT Designer comes from here: dl.google.com/eclipse/inst/d2gwt/latest/3.7
(there is NO 3.8 )

I have installed nothing else and not started any projects.

I hope this is of some use. Let me know if you need more.
Re: Missing Editor [message #1052948 is a reply to message #1052947] Wed, 01 May 2013 10:21 Go to previous messageGo to next message
Eclipse UserFriend

Ah so finally, I could submit the Eclipse message about the editor. It was the reference to the Google sites for the Plugin and GWT that stopped the submition.
Re: Missing Editor [message #1052955 is a reply to message #1052948] Wed, 01 May 2013 10:37 Go to previous messageGo to next message
Eclipse UserFriend
Alright, the failing editor is from the window builder project. You didn't mention you're using that, so is that an indirect dependency? More info on the window builder project (including mailing list for further questions) can be found here: http://projects.eclipse.org/projects/tools.windowbuilder

I could well imagine that the various plug-ins you installed are simply not compatible with your Eclipse 3.8.1, e.g. wbpro seems to be supported only up-to 3.7 (see https://developers.google.com/java-dev-tools/wbpro/installation/). So you might need to ask them if their tool can work in 3.8.1.
Re: Missing Editor [message #1052956 is a reply to message #1052955] Wed, 01 May 2013 10:49 Go to previous message
Eclipse UserFriend
OK thanks.

The Google Plugin comes with 5-6 packages, I just thought of them as one, sorry.

It's the Window Builder that I want too :}

Thanks again
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