I just before installed Spoofax/IMP on Windows XP, 2GB RAM, Java 6, Eclipse Galileo (updated today) and tried to follow exactly the Getting Started Tour. Creating the EntityLang example the build was succesful, but I got three error message windows: Dynamic editor descriptor loading - Internal error loading descriptor L/com.pany.entities/include/EntityLang.packed.esv: null (java null pointer exception).

The content of com.pany.entities/include/EntityLang.packed.esv is:
efs([IndentDef(String(“"="”)),IndentDef(String(“":"”))]),IdentifierLexical(String(“"[A-Za-z0-9_]+"”))])])

Details:
java.lang.NullPointerException
at org.eclipse.imp.language.LanguageRegistry.addUniversalEditorMappings(LanguageRegistry.java:429)
at org.eclipse.imp.language.LanguageRegistry.initializeRegistryAsNeeded(LanguageRegistry.java:283)
at org.eclipse.imp.language.LanguageRegistry.findLanguage(LanguageRegistry.java:138)
at org.eclipse.imp.editor.UniversalEditor.createPartControl(UniversalEditor.java:692)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:662)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:462)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:286)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2857)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2762)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2754)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2705)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2701)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2685)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2676)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:747)
at org.strategoxt.imp.runtime.EditorState.openEditor(EditorState.java:219)
at org.strategoxt.imp.runtime.EditorState$1.run(EditorState.java:202)
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:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.jface.dialogs.ErrorDialog.open(ErrorDialog.java:350)
at org.eclipse.jface.dialogs.ErrorDialog.openError(ErrorDialog.java:414)
at org.eclipse.jface.dialogs.ErrorDialog.openError(ErrorDialog.java:379)
at org.strategoxt.imp.runtime.Environment$2.run(Environment.java:336)
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:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.jface.dialogs.ErrorDialog.open(ErrorDialog.java:350)
at org.eclipse.jface.dialogs.ErrorDialog.openError(ErrorDialog.java:414)
at org.eclipse.jface.dialogs.ErrorDialog.openError(ErrorDialog.java:379)
at org.strategoxt.imp.runtime.Environment$2.run(Environment.java:336)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.block(ModalContext.java:173)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:388)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:944)
at org.strategoxt.imp.metatooling.wizards.NewEditorWizard.performFinish(NewEditorWizard.java:90)
at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:752)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:373)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3910)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3503)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.ui.actions.NewProjectAction.run(NewProjectAction.java:117)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3910)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3503)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
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:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

My eclipse.ini:
-vmargs
-Xss8m
-Xms256m
-Xmx512m … otherwise I cannot start eclipse
-XX:MaxPermSize=256m

(reported by Otto H.)

Submitted by Lennart Kats on 29 July 2010 at 13:44

Seems to work now:

I do not know what in detail is the reason, but now Spoofax/IMP works fine on XP:
- I changed from Eclipse Galileo to Eclipse Helios (Classic)
- I installed EMF, TPTP, Xpand, Xtend, Xtext, Antlr from itemis (needed for Xtext) and tried out Xtext
(besides: all these things - and a lot more - I had installed on Galileo too)
- I installed Spoofax/IMP and it worked fine :-D

(Keeping this issue open until we’ve investigated the cause.)