Index: trunk/kernel/include/item.php
===================================================================
diff -u -r1347 -r2687
--- trunk/kernel/include/item.php	(.../item.php)	(revision 1347)
+++ trunk/kernel/include/item.php	(.../item.php)	(revision 2687)
@@ -594,7 +594,11 @@
 		global $objSession, $objFavorites;
 
 		$res = FALSE;
-		if($objSession->HasCatPermission("FAVORITES", $this->GetPrimaryCategory() ))
+		
+		// user can be added to favorites, but they have no primary category :)
+		$category_id = method_exists($this, 'GetPrimaryCategory') ? $this->GetPrimaryCategory() : $GLOBALS['m_var_list']['cat'];
+		
+		if( $objSession->HasCatPermission("FAVORITES", $category_id) )
 		{
 			if(!$PortalUserId)
 			$PortalUserId = $objSession->Get("PortalUserId");
@@ -613,7 +617,10 @@
 
 		$res = FALSE;
 
-		if($objSession->HasCatPermission("FAVORITES", $this->GetPrimaryCategory()))
+		// user can be added to favorites, but they have no primary category :)
+		$category_id = method_exists($this, 'GetPrimaryCategory') ? $this->GetPrimaryCategory() : $GLOBALS['m_var_list']['cat'];
+		
+		if( $objSession->HasCatPermission("FAVORITES", $category_id) )
 		{
 			if(!$PortalUserId)
 			$PortalUserId = $objSession->Get("PortalUserId");