Index: ntags.php
===================================================================
--- ntags.php	(revision 13311)
+++ ntags.php	(working copy)
@@ -607,6 +607,16 @@
 		$code = array();
 		$code[] = '$res = ob_get_clean();';
 		$code[] = 'if ($_parser->DataExists) {echo $res;}';
+
+		if (array_key_exists('block_no_data', $this->Tag['NP'])) {
+			$tag_params = $this->Tag['NP'];
+			$tag_params['name'] = $tag_params['block_no_data'];
+			unset($tag_params['block_no_data']);
+
+			$to_pass = $this->Parser->CompileParamsArray($tag_params);
+			$code[] = "else { echo (\$_parser->ParseBlock($to_pass)); }";
+		}
+
 		$code[] = '$_parser->DataExists = $_tmp_data_exists;';
 
 		$this->AppendCode($o, $code);