I tried changing folders to public but error installation still occurs.

Warning: Smarty error: problem writing 'c_templates\install.html.' in d:\hosting\jpacheco\phpbt-0.9.1\inc\smarty\Smarty.class.php on line 589

Warning: fetch(c_templates\install.html): failed to open stream: No such file or directory in d:\hosting\jpacheco\phpbt-0.9.1\inc\smarty\Smarty.class.php on line 686

Warning: fetch(): Failed opening 'c_templates\install.html' for inclusion (include_path='.;c:/php/includes') in d:\hosting\jpacheco\phpbt-0.9.1\inc\smarty\Smarty.class.php on line 686