Index: lineage.module
===================================================================
--- lineage.module	(revision 164)
+++ lineage.module	(working copy)
@@ -119,6 +119,8 @@
 }
 
 function lineage_view_handler($field, $field_details, $content, $content_details) {
+	if ($content == '') return '';
+	
 	// split lineage string into pieces, i.e. hierarchial path (getting rid of weight numbers, too)
 	$path = split("\n[0-9]+", "\n".$content);
 	$s = '';