Workflow Rendering Broken in Latest Zend Comunity Server php 5.2 (Solution Found!)

function theme_workflow_graph_definition( $wid )
{
	require_once( 'Image/GraphViz.php' );
	drupal_set_title( t( 'Graph workflow %name', array(
		 '%name' => workflow_get_name( $wid ) 
	) ) );
	
	$G   = _workflow_graph_definition_generate( $wid );
	$dot = <<< EOS
/*
 * @formats = png
 * @imagemap = TRUE
 */
EOS;
	$dot .= $G->fetch( 'dot' ); //HERE ****************
	return graphviz_filter_process( $dot );

}

All what I have done was simply replace the above bold line with this

	$dot .= $G->parse();

That's all folks, spent a day on this!!