Bug 338444 Unable to restart after upgrade
I upgraded from I20110114 to I20110225. After the upgrading, the workbench will not start. There are a large number of NPE's in the log. I will attach the whole log, but here are some example: Caused by: java.lang.NullPointerException at org.eclipse.ui.internal.Workbench.contains(Workbench.java:1870) at org.eclipse.ui.internal.Workbench.defineBindingTable(Workbench.java:1852) java.lang.NullPointerException at org.eclipse.ui.internal.Workbench.setReference(Workbench.java:1681) at org.eclipse.ui.internal.Workbench.access$19(Workbench.java:1677)
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
if (originalMenus.contains(reference)) {
									return key;
								}
								if (((MPart) key).getMenus().contains(reference)) {
									appendedMenu = true;
								}
								break;
							}
						}
					}
				}
				boolean menuSet = false;
				boolean menuChanged = false;
				for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
					EObject key = entry.getKey();
					if (key instanceof MWindow) {
						for (FeatureChange change : entry.getValue()) {
							if (change.getFeatureName().equals(WINDOW_MAINMENU_ATTNAME)) {
								Object oldMenu = change.getValue();
								if (oldMenu == reference) {
									return key;
								} else if (oldMenu == null
										&& ((MWindow) key).getMainMenu() == reference) {
									menuSet = true;
								}
								menuChanged = true;
								break;
							}
						}
					}