Bug 132914 "Invalid page number" error message is hard coded.
"Invalid page number" error message is hard coded in DocumentProcessor.java. This must be externalized into *.properties file. If there are other hard coded error messages, please also externalize.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
for ( int i = 0; i < files.length; i++ )
			{
				File file = files[i];
				if ( file.isFile( ) )
				{
					if ( file.getName( ).endsWith( ".jar" ) ) 
						fileList.add( file );
				}
				else if ( file.isDirectory( ) )
				{
					getAllJarFiles( file, fileList );
				}
			}
		}
	}
	/**
	 * Set Engine context.
	 * 
	 * @param servletContext
	 * @param request
	 */
	synchronized public void setEngineContext( ServletContext servletContext,
			HttpServletRequest request )
	{
		if ( engine == null )
		{
			IPlatformContext platformContext = new PlatformServletContext(
					servletContext );
			config.setPlatformContext( platformContext );
			try