Have problem with custom query template with wp-super-cache

Hi

I tried to use wp-super-cache. However in the page in which is used custom_query_template.php, the error occuers (page has blank). In the wp-super-cache, the author says do this below

-----------------------------------------
define('WP_CACHE', true); <--- put this this positon

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');
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If define('WP_CACHE', true); is in the end of wp-config.php, it has no problem (when I use wp-cache, I put these in the end of the script though I don't know it works or not).

Appreciated for any help. Thank you.