I am able to launch the javascript debugger and step through my code. Once. No matter what I do thereafter, it fails to stop at breakpoints. I tried: terminating the launch, removing the launch, pressing refresh button on browser. pressing clear cache button on browser, closing browser window and repeating the "debug as javascript" operation to reopen it, etc. If I end Eclipse altogether, restart, then it works - once. Note: the page does display and the javascript is obviously executing. The debugger just won't stop at the breakpoints.

I also notice that I get on the Javascript console two of these messages at the top (hand transcribed since there is no way to copy this to clipboard):

[Exception Component returned failure code 0x80570016 (NS_ERROR_XP_GS_RETURNED_FAILURE)[nsIJSCID.getService) ... plus some more similar or identical stuff ... location: "JS frame:: file://.../MyEclipse.../eclipse/plugin

The Eclipse log shows some assert statement stuff:

org.eclipse.swt.SWTException: Failed to execute runnable (org.eclipse.jface.util.Assert$AssertionFailedException: Assertion failed: ContentViewer must have a content provider when input is set.)
at org.eclipse.swt.SWT.error(SWT.java:3374)
at org.eclipse.swt.SWT.error(SWT.java:3297)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:126)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3325)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
Caused by: org.eclipse.jface.util.Assert$AssertionFailedException: Assertion failed: ContentViewer must have a content provider when input is set.
at org.eclipse.jface.util.Assert.isTrue(Assert.java:182)
at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:242)
at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1542)
at com.genuitec.javascript.debug.ui.views.JSScriptView.setViewerInput(JSScriptView.java:136)
at com.genuitec.javascript.debug.ui.views.JSScriptView.access$0(JSScriptView.java:135)
at com.genuitec.javascript.debug.ui.views.JSScriptView$4.run(JSScriptView.java:127)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123)
... 20 more

Here is my config:

*** Date: Thu Nov 02 12:15:56 CST 2006

*** System properties:
OS=WindowsXP
OS version=5.1
Java version=1.5.0_08

*** MyEclipse details:
MyEclipse Enterprise Workbench

Version: 5.0 GA
Build id: 20060805-5.0-GA

*** Eclipse details:
Eclipse SDK

Version: 3.2.0
Build id: M20060629-1905

Eclipse Graphical Editing Framework

Version: 3.2.0.v20060626
Build id: 20060627-0816

Eclipse Platform

Version: 3.2.0.v20060609m-AgOexn6hlEUsvBO
Build id: M20060629-1905

Eclipse RCP

Version: 3.2.0.v20060609m-SVDNgVrNoh-MeGG
Build id: M20060629-1905

Eclipse Java Development Tools

Version: 3.2.0.v20060609m-F7snq1fxia-Z4XP
Build id: M20060629-1905

Eclipse Plug-in Development Environment

Version: 3.2.0.v20060609m------6zXJJzJzJq
Build id: M20060629-1905

Eclipse Project SDK

Version: 3.2.0.v20060609m-GNq6oQq-7es-Y81
Build id: M20060629-1905

Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-launcher
C:\tom\e\eclipse.exe
-name
Eclipse
-showsplash
600
-exitdata
cc0_54
-vm
C:\WINDOWS\system32\javaw.exe

This is very strange, does it happen no matter *what* JavaScript you try and debug? (like other JS files?)

Also this might be memory related, have a look at our tip here and see if that helps: http://www.myeclipseide.com/PNphpBB2+file-viewtopic-t-10087.html