diff --git a/plugins/cipf_plugin/utils/plgntls_class.php b/plugins/cipf_plugin/utils/plgntls_class.php
index 4c3512e..e69df84 100644
--- a/plugins/cipf_plugin/utils/plgntls_class.php
+++ b/plugins/cipf_plugin/utils/plgntls_class.php
@@ -152,10 +152,21 @@ class PLGNTLS_class
 	private static function set_root_dir() {
 		if (isset(self::$_plugin_name, self::$_file_name, self::$_file_dir_path, self::$_plugin_dir_path))
 			return ;
+		/*
+		* it uses exploded_path_path by removing data from the array
+		* so order is important !
+		*                 plugin_name / path / to / file.php
+		* exploded       [plugin_name,  path,  to,  file.php]
+		* plugin_name     plugin_name  [path,  to,  file.php]
+		* file_name                    [path,  to]  file.php
+		* file_dir_name                 path / to
+		*/
 		$exploded_plugin_path = explode('/', plugin_basename( __FILE__ ));
+
 		self::$_plugin_name = array_shift($exploded_plugin_path);
 		self::$_file_name = array_pop($exploded_plugin_path);
 		self::$_file_dir_path = implode('/', $exploded_plugin_path);
+
 		self::$_plugin_dir_path = str_replace('/'.plugin_basename(__DIR__).'/', '', plugin_dir_path(__FILE__));
 		self::$_root_path = self::$_plugin_dir_path.'/'.self::$_plugin_name.'/';
 		self::$_root_url = plugins_url(self::$_plugin_name.'/');