diff --git a/lib/PHPRtfLite/Autoloader.php b/lib/PHPRtfLite/Autoloader.php
index 5dc5af5..873d8de 100644
--- a/lib/PHPRtfLite/Autoloader.php
+++ b/lib/PHPRtfLite/Autoloader.php
@@ -59,6 +59,11 @@ public static function autoload($className)
         if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/m', $className)) {
             throw new Exception("Class name '$className' is invalid");
         }
+        // Idea: Smarty - Autoloader - https://github.com/smarty-php/smarty/blob/master/libs/Autoloader.php
+        // Just autoload with your own PHPRtfLite files
+        if (stripos($className, 'PHPRtfLite') !== 0) {
+            return;
+        }
 
         $classFile = self::$_baseDir . '/' . str_replace('_', '/', $className) . '.php';
 
diff --git a/lib/PHPRtfLite/Table.php b/lib/PHPRtfLite/Table.php
index 62d354a..df7c8aa 100644
--- a/lib/PHPRtfLite/Table.php
+++ b/lib/PHPRtfLite/Table.php
@@ -49,13 +49,13 @@ class PHPRtfLite_Table implements PHPRtfLite_Freeable
      * array of PHPRtfLite_Table_Row instances
      * @var PHPRtfLite_Table_Row[]
      */
-    protected $_rows;
+    protected $_rows = array();
 
     /**
      * array of PHPRtfLite_Table_Column instances
      * @var PHPRtfLite_Table_Column[]
      */
-    protected $_columns;
+    protected $_columns = array();
 
     /**
      * @var string