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Hi there. I found an error with a custom editor. In fact, the editor ID was good (cf the following stacktrace). The problem was I did't set any icon for this editor. I define an icon for the editor and this bug disappear. org.eclipse.ui.PartInitException: Unable to open editor, unknown editor ID: ch.comem.rcp.dcm.editors.dvdeditor at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:661) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2390) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2325) at org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPage.java:2317) at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2303) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2298) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2275) at ch.comem.rcp.dcm.views.CollectionView$1.doubleClick(CollectionView.java:39) at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:759) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:816) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148) at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:757) at org.eclipse.jface.viewers.StructuredViewer.handleDoubleSelect(StructuredViewer.java:991) at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1098) at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:220) at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:217) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:276) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1074) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3158) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2838) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1899) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1863) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:417) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at rcp.Application.run(Application.java:18) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:99) 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:374) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169) 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:585) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:338) at org.eclipse.core.launcher.Main.basicRun(Main.java:282) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952)
*** This bug has been marked as a duplicate of 129765 ***