I get a dialog about "Initializing Java Tooling" encountering a problem and the details are:
An internal error occurred during: "Initializing Java Tooling".
Looking in the workspace/.metadata/.log file finds the following matching stack traces:
eclipse.buildId=M20100909-0800
java.version=1.6.0_22
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86, WS=carbon, NL=en_AU
Framework arguments: -plugincustomization /Users/bwallis/InfoMedix/JBoss/jbpm/jbpm-installer//eclipse.preferences.ini
Command-line arguments: -os macosx -ws carbon -arch x86 -data /Users/bwallis/InfoMedix/JBoss/jbpm/jbpm-installer//workspace -plugincustomization /Users/bwallis/InfoMedix/JBoss/jbpm/jbpm-installer//eclipse.preferences.ini
!ENTRY org.eclipse.jdt.core 4 4 2011-01-13 23:29:33.359
!MESSAGE Unable to read variable and containers file
!STACK 0
java.io.EOFException
at java.io.DataInputStream.readBoolean(DataInputStream.java:227)
at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersLoadHelper.loadBoolean(JavaModelManager.java:3258)
at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersLoadHelper.loadPath(JavaModelManager.java:3348)
at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersLoadHelper.loadContainers(JavaModelManager.java:3320)
at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersLoadHelper.loadProjects(JavaModelManager.java:3378)
at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersLoadHelper.load(JavaModelManager.java:3212)
at org.eclipse.jdt.internal.core.JavaModelManager.loadVariablesAndContainers(JavaModelManager.java:3049)
at org.eclipse.jdt.internal.core.JavaModelManager.startup(JavaModelManager.java:4705)
at org.eclipse.jdt.core.JavaCore.start(JavaCore.java:5048)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:774)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:370)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:33)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:466)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:151)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:751)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:370)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:338)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:232)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1197)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:904)
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$1.run(WorkbenchPlugin.java:267)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:263)
at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:63)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:327)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:4218)
at org.eclipse.ui.internal.WorkbenchPage$18.runWithException(WorkbenchPage.java:3277)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3511)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3239)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
at org.eclipse.ui.internal.Workbench$31.runWithException(Workbench.java:1567)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3511)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3239)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2548)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
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:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
!ENTRY org.eclipse.core.net 1 0 2011-01-13 23:29:34.900
!MESSAGE System property http.nonProxyHosts has been set to local|*.local|169.254/16|*.169.254/16 by an external source. This value will be overwritten using the values from the preferences
!ENTRY org.eclipse.core.jobs 4 2 2011-01-13 23:29:35.209
!MESSAGE An internal error occurred during: "Initializing Java Tooling".
!STACK 0
java.lang.NullPointerException
at org.jboss.tools.jbpm.util.DefaultJBPMRuntimeRecognizer.addJarNames(DefaultJBPMRuntimeRecognizer.java:38)
at org.jboss.tools.jbpm.util.DefaultJBPMRuntimeRecognizer.recognizeJars(DefaultJBPMRuntimeRecognizer.java:31)
at org.jboss.tools.jbpm.util.JBPMRuntimeManager.recognizeJars(JBPMRuntimeManager.java:253)
at org.jboss.tools.jbpm.util.JBPMRuntimeManager.getJBPMRuntimeJars(JBPMRuntimeManager.java:228)
at org.jboss.tools.jbpm.util.JBPMClasspathContainer.getJarNames(JBPMClasspathContainer.java:77)
at org.jboss.tools.jbpm.util.JBPMClasspathContainer.createJBPMLibraryEntries(JBPMClasspathContainer.java:65)
at org.jboss.tools.jbpm.util.JBPMClasspathContainer.getClasspathEntries(JBPMClasspathContainer.java:47)
at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2651)
at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2783)
at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1915)
at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3496)
at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:35)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)