js exception when chart is redrawn

I am trying to dynamically update a column chart using the vaadin-charts and the vaadin-refresher add-on components. While the chart refreshes successfuly for each interval, I see a java script exception each time the chart refreshes. Stack trace copied below.

Could this be an issue in my implementation ?
I am following the example from (https://vaadin.com/directory#addon/refresher). Calling the drawChart() in every refresh()

vaadin 7.2.1
charts 1.0.0
refresher 1.2.3.7

Wed Jun 11 09:11:17 PDT 2014 com.vaadin.client.ApplicationConfiguration
SEVERE: (TypeError) @com.vaadin.addon.charts.client.ui.HighchartJsOverlay::destroy()(): Cannot read property ‘removeAttribute’ of undefinedcom.google.gwt.core.client.JavaScriptException: (TypeError) @com.vaadin.addon.charts.client.ui.HighchartJsOverlay::destroy()(
): Cannot read property ‘removeAttribute’ of undefined
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:252)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:137)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:589)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:315)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:120)
at com.vaadin.addon.charts.client.ui.HighchartJsOverlay$.destroy$(HighchartJsOverlay.java)
at com.vaadin.addon.charts.client.ui.HighchartWidget.init(HighchartWidget.java:40)
at com.vaadin.addon.charts.client.ui.ChartConnector$6.execute(ChartConnector.java:157)
at com.google.gwt.core.client.impl.SchedulerImpl$Task$.executeScheduled$(SchedulerImpl.java:50)
at com.google.gwt.core.client.impl.SchedulerImpl.runScheduledTasks(SchedulerImpl.java:180)
at com.google.gwt.core.client.impl.SchedulerImpl.flushPostEventPumpCommands(SchedulerImpl.java:345)
at com.google.gwt.core.client.impl.SchedulerImpl$Flusher.execute(SchedulerImpl.java:78)
at com.google.gwt.core.client.impl.SchedulerImpl.execute(SchedulerImpl.java:138)
at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:72)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)