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org.eclipse.core.runtime.AssertionFailedException: null argument:	at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:85)	at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:73)	at org.eclipse.core.internal.events.ResourceChangeListenerList.remove(ResourceChangeListenerList.java:146)	at org.eclipse.core.internal.events.NotificationManager.removeListener(NotificationManager.java:305)	at org.eclipse.core.internal.resources.Workspace.removeResourceChangeListener(Workspace.java:1934)	at com.appcelerator.titanium.mobile.launching.FastDevServer.terminated(FastDevServer.java:69)	at com.appcelerator.titanium.core.launching.AbstractSharedProcessLaunch$1.handleDebugEvents(AbstractSharedProcessLaunch.java:62)	at org.eclipse.debug.core.DebugPlugin$EventNotifier.run(DebugPlugin.java:1089)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.debug.core.DebugPlugin$EventNotifier.dispatch(DebugPlugin.java:1123)	at org.eclipse.debug.core.DebugPlugin$EventDispatchJob.run(DebugPlugin.java:390)	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)