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After installing and using the Ant Editor successfully for 24 hours, it suddenly stops working with a message 'Unable to create this part due to an internal error. Reason for the failure: Unexpected exception was thrown.' The stack trace thrown is as follows: java.lang.ClassCastException at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source) at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl.<init>(Unknown Source) at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source) at org.apache.tools.ant.util.JAXPUtils.newSAXParser(JAXPUtils.java:205) at org.apache.tools.ant.util.JAXPUtils.getNamespaceXMLReader(JAXPUtils.java:163) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:193) at org.eclipse.ant.internal.ui.editor.utils.ProjectHelper.parse(ProjectHelper.java:526) at org.eclipse.ant.internal.ui.editor.utils.ProjectHelper.parse(ProjectHelper.java:631) at org.apache.tools.ant.taskdefs.ImportTask.execute(ImportTask.java:140) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275) at org.eclipse.ant.internal.ui.model.AntImportNode.configure(AntImportNode.java:70) at org.eclipse.ant.internal.ui.model.AntModel.resolveBuildfile(AntModel.java:501) at org.eclipse.ant.internal.ui.model.AntModel.parseDocument(AntModel.java:326) at org.eclipse.ant.internal.ui.model.AntModel.reconcile(AntModel.java:263) at org.eclipse.ant.internal.ui.model.AntModel.getProjectNode(AntModel.java:1383) at org.eclipse.ant.internal.ui.model.AntModel.getProjectNode(AntModel.java:1393) at org.eclipse.ant.internal.ui.editor.text.AntFoldingStructureProvider.updateFoldingRegions(AntFoldingStructureProvider.java:88) at org.eclipse.ant.internal.ui.editor.AntEditor.projectionEnabled(AntEditor.java:1370) at org.eclipse.jface.text.source.projection.ProjectionViewer.fireProjectionEnabled(ProjectionViewer.java:481) at org.eclipse.jface.text.source.projection.ProjectionViewer.enableProjection(ProjectionViewer.java:529) at org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation(ProjectionViewer.java:1429) at org.eclipse.ant.internal.ui.editor.AntEditor$StatusLineSourceViewer.doOperation(AntEditor.java:302) at org.eclipse.ant.internal.ui.editor.AntEditor.createPartControl(AntEditor.java:1103) at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:596) at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:372) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:566) at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:290) at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:140) at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268) at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65) at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:394) at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1144) at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1097) at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1311) at org.eclipse.ui.internal.PartStack.add(PartStack.java:455) at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102) at org.eclipse.ui.internal.PartStack.add(PartStack.java:441) at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111) at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:60) at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:217) at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:207) at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:819) at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:718) at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:679) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2586) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2521) at org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPage.java:2513) at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2498) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2493) at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:288) at org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:280) at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:184) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968) 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$1.run(PlatformActivator.java:78) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336) at org.eclipse.core.launcher.Main.basicRun(Main.java:280) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952) I think it may have something to do with variable calls in the Ant scripts (eg: <property name="publish_mode" value="local" /> <import file="publish-${publish_mode}.xml" /> ). But then that doesn't explain why it worked fine in the beginning.
Thank you for the bug report. This is a known problem that is being worked on in bug 143008. See bug 143008 comment #6 for some workarounds. *** This bug has been marked as a duplicate of 143008 ***
(In reply to comment #1) > Thank you for the bug report. > > This is a known problem that is being worked on in bug 143008. > See bug 143008 comment #6 for some workarounds. > > *** This bug has been marked as a duplicate of 143008 *** > Thank you for your super prompt response. Regards Matt
