Bug 203026 Can not export chart to doc.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
/**
	 * Set Engine context.
	 * 
	 * @param servletContext
	 * @param request
	 * @deprecated
	 * @throws BirtException
	 */
	public synchronized void setEngineContext( ServletContext servletContext,
			HttpServletRequest request ) throws BirtException
	{
		setEngineContext( servletContext );
	}
	/**
	 * Set Engine context.
	 * 
	 * @param servletContext
	 * @throws BirtException
	 */
	public synchronized void setEngineContext( ServletContext servletContext )
			throws BirtException
	{
		if ( engine == null )
		{
			IPlatformContext platformContext = new PlatformServletContext(
					servletContext );
			config.setPlatformContext( platformContext );
			
			Platform.startup( config );
			IReportEngineFactory factory = (IReportEngineFactory) Platform