Bug 179676 [regression]Error when report has chart in master page[05]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/internal/executor/doc/ReportPageReader.java
try
			{
				IContent pageContent = pageReader.loadContent( offset );
				initializeContent( pageContent );
				loadFullContent( pageReader, pageContent, null );
				pageReader.unloadContent( offset );
				return (IPageContent) pageContent;
			}
			catch ( Exception ex )
			{
				logger.log( Level.SEVERE, "Can't load the page content", ex );
			}
		}
		return null;
	}
	private void loadFullContent( CachedReportContentReaderV3 reader,
			IContent parent, IBaseResultSet prset ) throws IOException, BirtException
	{
		DocumentExtension docExt = (DocumentExtension) parent
				.getExtension( IContent.DOCUMENT_EXTENSION );
		long offset = docExt.getFirstChild( );
		while ( offset != -1 )
		{
			IContent content = reader.loadContent( offset );
			initializeContent( content );
			IBaseResultSet[] rsets = openQueries( prset, content );
			if (rsets != null)
			{
				context.setResultSets( rsets );