Here is the patch that solve the problem:
Index: class.template.php
===================================================================
--- class.template.php (revision 626)
+++ class.template.php (working copy)
@@ -728,7 +728,6 @@
$this->_compile_obj->template_dir = &$this->template_dir;
$this->_compile_obj->_vars = &$this->_vars;...
2007-08-03 10:57:27 UTC in Template Lite
