[Philip.Massey]

After installing EnterpriseWorkbenchInstaller_030700.exe
Eclipse 3.0M7 I cannot set a breakpoint in the Java Debug
mode:java.lang.NoClassDefFoundError:
org/eclipse/debug/core/model/IStepFilters
java.lang.NoClassDefFoundError:
org/eclipse/debug/core/model/IStepFilters;at
java.lang.ClassLoader.defineClass0(Native Method) at
java.lang.ClassLoader.defineClass(Unknown Source) at
org.eclipse.osgi.framework.internal.defaultadaptor.DefaultClassLoader.define
Class(DefaultClassLoader.java:298);at
org.eclipse.core.runtime.adaptor.EclipseClassLoader.defineClass(EclipseClass
Loader.java:99)<BR> at
org.eclipse.osgi.framework.internal.defaultadaptor.DefaultClassLoader.findCl
assImpl(DefaultClassLoader.java:287)<BR> at
org.eclipse.osgi.framework.internal.defaultadaptor.DefaultClassLoader.findCl
ass(DefaultClassLoader.java:176)<BR> at
org.eclipse.osgi.framework.adaptor.BundleClassLoader.findLocalClass(BundleCl
assLoader.java:261)<BR> at
org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseCl
assLoader.java:73)<BR> at
org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleL
oader.java:326)<BR> at
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader
.java:357)<BR> at
org.eclipse.osgi.framework.adaptor.BundleClassLoader.loadClass(BundleClassLo
ader.java:115)<BR> at java.lang.ClassLoader.loadClass(Unknown
Source)<BR> at java.lang.ClassLoader.loadClassInternal(Unknown
Source)<BR> at
org.eclipse.jdt.internal.debug.core.JDIDebugPlugin.addHotCodeReplaceListener
(JDIDebugPlugin.java:176)<BR> at
org.eclipse.jdt.debug.core.JDIDebugModel.addHotCodeReplaceListener(JDIDebugM
odel.java:175)<BR> at
org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin.startup(JDIDebugUIPlugin.
java:339)<BR> at
org.eclipse.core.internal.compatibility.PluginActivator.start(PluginActivato
r.java:49)<BR> at
org.eclipse.osgi.framework.internal.core.BundleContext$1.run(BundleContext.j
ava:1054)<BR> at java.security.AccessController.doPrivileged(Native
Method)<BR> at
org.eclipse.osgi.framework.internal.core.BundleContext.startActivator(Bundle
Context.java:1050)<BR> at
org.eclipse.osgi.framework.internal.core.BundleContext.start(BundleContext.j
ava:991)<BR> at
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.j
ava:403)<BR> at
org.eclipse.osgi.framework.internal.core.Bundle.start(Bundle.java:312)<BR>&n
bsp;at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExte
nsion(ConfigurationElement.java:133)<BR> at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExte
nsion(ConfigurationElement.java:125)<BR> at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExte
nsion(ConfigurationElement.java:114)<BR> at
org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java
:164)<BR> at
org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:110)<B
R> at
org.eclipse.ui.internal.WWinPluginAction.refreshActionList(WWinPluginAction.
java:148)<BR> at
org.eclipse.ui.plugin.AbstractUIPlugin$3.run(AbstractUIPlugin.java:778)<BR>&
nbsp;at
org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)<BR> at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:102)
<BR> at
org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:2325)<BR>&nbsp
;at
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2033)<BR> 
at org.eclipse.jface.window.Window.runEventLoop(Window.java:647)<BR> at
org.eclipse.jface.window.Window.open(Window.java:627)<BR> at
org.eclipse.jface.dialogs.MessageDialog.openInformation(MessageDialog.java:3
03)<BR> at
org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:246)<BR>
 at
org.eclipse.ui.internal.PluginAction.run(PluginAction.java:235)<BR> at
org.eclipse.ui.texteditor.AbstractTextEditor$10.triggerAction(AbstractTextEd
itor.java:1792)<BR> at
org.eclipse.ui.texteditor.AbstractTextEditor$10.mouseDoubleClick(AbstractTex
tEditor.java:1806)<BR> at
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:140)<BR
> at
org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)<BR> at
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:833)<BR> at
org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2348)<BR>&nbs
p;at
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2029)<BR> 
at
org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1550)<BR>&nbsp
;at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1526)<BR> at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:265)<
BR> at
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:139)<BR>&nbs
p;at
org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:47)<BR>&n
bsp;at
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.
java:257)<BR> at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:104)
<BR> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)<BR> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown
Source)<BR> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)<BR> at java.lang.reflect.Method.invoke(Unknown
Source)<BR> at
org.eclipse.core.launcher.Main.basicRun(Main.java:279)<BR> at
org.eclipse.core.launcher.Main.run(Main.java:742)<BR> at
org.eclipse.core.launcher.Main.main(Main.java:581)<BR>

[Riyad Kalla]

This definately sounds like an install problem, can you post the information we ask for in the posting guidelines? A quick way to do this is to click “post Reply” and then hit the Insert button and answer all the questions.

[Philip.Massey]

– System Setup ——————————-
Operating System and version: Win2000
Eclipse version: 3.0M7
Eclipse build id: Eclipse Platform Version: 3.0.0 Build id: 200402122000
Fresh Eclipse install (y/n): Y
If not, was it upgraded to its current version using the update manager?
Other installed external plugins: none
Number of plugins in the <eclipse>/plugins directory that begin with org.eclipse.pde.*: 8
MyEclipse version: 3.7
Eclipse JDK version: j2re1.4.2_03
Application Server JDK version: j2re1.4.2_03
Are there any exceptions in the Eclipse log file? see first posting

– Message Body ——————————-
Works fine after Uninstalling MyEclipse

[Riyad Kalla]

Phil,
I’m kind of stumped by this and have asked S/M to weigh in on it. I’ve personally not seen anyone ever report this, so I really think it might be some funky install issue on your site.

If you have the time, would you mind redownloading the 3.0M7 Eclipse SDK, and 3.7 GA of MyEclipse (manual install) and installing them someplace completely isolated on your hard drive? I think that would clear up the issue for you if you are very systematic about doing a clean install.

[Scott Anderson]

Philip,

I looked at the log file you sent and it definately looks like an installation issue since the class that can’t be found is obviously in the debug core jar file in M7. I’ll have to recommend exactly what Riyad suggested; a clean parallel installation of M7 and then MyEclipse 3.7 GA. Please be sure to start the new release of M7 after installation so Eclipse can finish its normal setup before the 3.7 GA installation.

Another thing to try as a shortcut, if you like, is to delete the <workspace>/.config directory. This will reset Eclipse’s configuration state and will make it recompute its configuration. In the past we’ve seen issues with what Eclipse caches becoming out of date. However, if this doesn’t work the fresh installation is the best option.

[Philip.Massey]

Can set breakpoint after delete of .config directory and reinstall of MyEclipse. Thanks for the help.

[Scott Anderson]

Philip,

And thank you for your patience. 🙂 The Eclipse “configuration caching” mechanism is still under active development by the Eclipse team so it’s been a bit problematic for the M6 and M7 builds. Hopefully it will all get sorted out soon.

[Author]

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