Index: branches/RC/core/kernel/db/db_tag_processor.php
===================================================================
diff -u -N -r11685 -r11692
--- branches/RC/core/kernel/db/db_tag_processor.php	(.../db_tag_processor.php)	(revision 11685)
+++ branches/RC/core/kernel/db/db_tag_processor.php	(.../db_tag_processor.php)	(revision 11692)
@@ -2436,6 +2436,12 @@
 	{
 		$check_field = $params['field'];
 		$fields = $this->Application->getUnitOption($this->Prefix, 'Fields');
+
+		if (!array_key_exists($check_field, $fields)) {
+			// field not found in real fields array -> it's 100% virtual then
+			$fields = $this->Application->getUnitOption($this->Prefix, 'VirtualFields');
+		}
+
 		$show_mode = array_key_exists('show_mode', $fields[$check_field]) ? $fields[$check_field]['show_mode'] : true;
 
 		if ($show_mode === smDEBUG) {
@@ -2457,12 +2463,20 @@
 			return true;
 		}
 
-		$fields = $this->Application->getUnitOption($this->Prefix, 'Fields');
 		$check_fields = explode(',', $params['fields']);
+		$fields = $this->Application->getUnitOption($this->Prefix, 'Fields');
+		$virtual_fields = $this->Application->getUnitOption($this->Prefix, 'VirtualFields');
 
 		foreach ($check_fields as $check_field) {
 			// when at least one field in subsection is visible, then subsection is visible too
-			$show_mode = array_key_exists('show_mode', $fields[$check_field]) ? $fields[$check_field]['show_mode'] : true;
+
+			if (array_key_exists($check_field, $fields)) {
+				$show_mode = array_key_exists('show_mode', $fields[$check_field]) ? $fields[$check_field]['show_mode'] : true;
+			}
+			else {
+				$show_mode = array_key_exists('show_mode', $virtual_fields[$check_field]) ? $virtual_fields[$check_field]['show_mode'] : true;
+			}
+
 			if (($show_mode === true) || (($show_mode === smDEBUG) && (defined('DEBUG_MODE') && DEBUG_MODE))) {
 				// field is visible
 				return true;