[Tim Kettering]

I am running Eclipse 3.0 M8 with MyEclipse 3.7.2 on XP, and Ant is giving me problems. Before installing MyEclipse this problem does not occur. Once MyEclipse is installed, when starting up there are a bunch of unresolved bundle references like:
!ENTRY org.eclipse.osgi Apr 20, 2004 15:46:43.413
!MESSAGE Bundle reference:file:C:/Program Files/MyEclipse/eclipse/plugins/com.genuitec.eclipse.easie.jetty_3.6.1/ [107] was not resolved
!ENTRY org.eclipse.osgi Apr 20, 2004 15:46:43.413
!MESSAGE Bundle reference:file:C:/Program Files/MyEclipse/eclipse/plugins/com.genuitec.eclipse.easie.oracle9_3.6.1/ [113] was not resolved

When trying to run Ant I get “ERROR: Launch : An internal error occurred during : ‘Launch'”. I also get an error when trying to open the External Tools, though the window does come up. The Ant Builds that I created before installing MyEclipse are there, but when any are selected nothing appears where all of the config stuff normally is. It’s just a blank frame.
The log records:
!ENTRY org.eclipse.core.runtime 4 2 Apr 20, 2004 15:28:24.664
!MESSAGE Problems occurred when invoking code from plug-in: “org.eclipse.core.runtime”.
!STACK 0
java.lang.NoClassDefFoundError: org/eclipse/debug/core/ILaunchesListener2
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
at org.eclipse.osgi.framework.internal.defaultadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:309)
at org.eclipse.core.runtime.adaptor.EclipseClassLoader.defineClass(EclipseClassLoader.java:175)
at org.eclipse.osgi.framework.internal.defaultadaptor.DefaultClassLoader.findClassImpl(DefaultClassLoader.java:298)
at org.eclipse.osgi.framework.internal.defaultadaptor.DefaultClassLoader.findClass(DefaultClassLoader.java:187)
at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.findLocalClass(AbstractClassLoader.java:243)
at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:104)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:315)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:346)
at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:116)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at org.eclipse.debug.internal.ui.DebugUIPlugin.launchAdded(DebugUIPlugin.java:673)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.run(LaunchManager.java:1296)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:610)
at org.eclipse.core.runtime.Platform.run(Platform.java:521)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.notify(LaunchManager.java:1322)
at org.eclipse.debug.internal.core.LaunchManager.fireUpdate(LaunchManager.java:318)
at org.eclipse.debug.internal.core.LaunchManager.addLaunch(LaunchManager.java:383)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:150)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:774)
at org.eclipse.debug.ui.DebugUITools.buildAndLaunch(DebugUITools.java:629)
at org.eclipse.debug.ui.DebugUITools$3.run(DebugUITools.java:585)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:62)

This actually comes twice followed by two stack traces originating with a NoClassDefFoundError for org/eclipse/debug/core/model/LaunchConfigurationDelegate

The External Tools problem produces an error in the log that has a NoClassDefFoundError for org/eclipse/jdt/internal/debug/ui/launcher/IClasspathViewer

Has anyone seen this, anyone know of possible causes? Is there any more pertinent info I can provide?

[Riyad Kalla]

You can “uninstall” MyEclipse by moving the file in your <Eclipse>\links folder to your desktop. Then restart Eclipse. IF its still broken then something is wrong with Eclipse. We don’t do anything invasive so I’m not sure why you are seeing this behavior, but it sounds errily farmiliar to me… I just can’t put my finger on it.

Also I noticed the versions “3.6.1” in your log file, did you install MYEclipse recently ontop of an older version?

[arnor]

https://www.genuitec.com/forums/topic/build-failed-unable-to-load-default-projecthelper-closed/
may be is it tha same problem?
I have installed myEclipse 3.7.2 in this dir:
C:\Program Files\MyEclipse_3.7.2

is it right?Do I can to try some new attempt?

regards Lorenzo

[Riyad Kalla]

C:\Program Files\MyEclipse_3.7.2

is it right?Do I can to try some new attempt?

This *should* work fine, I did reply to your in that other thread with a possible solution, give that a try and see if it works.

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