Index: branches/RC/core/kernel/nparser/ntags.php
===================================================================
diff -u -r11067 -r11214
--- branches/RC/core/kernel/nparser/ntags.php	(.../ntags.php)	(revision 11067)
+++ branches/RC/core/kernel/nparser/ntags.php	(.../ntags.php)	(revision 11214)
@@ -158,6 +158,11 @@
 	{
 		$o = parent::Open($tag);
 
+		if ($o === false) {
+			// some required params not passed
+			return $o;
+		}
+
 		$f_name = $tag['NP']['name'].'_'.abs(crc32($tag['file'])).'_'.$tag['line'];
 		$this->Tag['function_name'] = $f_name; // for later use in closing tag
 
@@ -318,6 +323,11 @@
 	{
 		$o = parent::Open($tag);
 
+		if ($o === false) {
+			// some required params not passed
+			return $o;
+		}
+
 		$capture_params = $tag['NP'];
 		$capture_params['name'] = '__capture_' . $tag['NP']['name'];
 
@@ -374,6 +384,12 @@
 	function Open($tag)
 	{
 		$o = parent::Open($tag);
+
+		if ($o === false) {
+			// some required params not passed
+			return $o;
+		}
+
 		$to_pass = $this->Parser->CompileParamsArray($tag['NP']);
 
 		$code[] = "\$_splited = \$_parser->SplitTag(array('tag'=>\"{$tag['NP']['check']}\", 'file'=>'{$tag['file']}', 'line'=>{$tag['line']}));";