problem on publication

Hi buddy´s
does anyone know how to solve the followed problem:
Error type 2

Error description fopen(templates_c\wrt474da901d8c49) [function.fopen]: failed to open stream: Permission denied

URL www.bqarcondicionado.com.br/sisbq/menu.php?

error file d:\empresas\bqarcondicionado\sisbq\libs\internals\core.write_file.php

line with error 32
its happen when i login on my aplication!!!
before starts menu!!!
tks!!!!