thank you very much..i just unpatch the joomla index.php and it works. any idea why this happened?

Hi, can anyone help me? i've just finished installing SMF 1.1 RC2 together with Joomla-SMF 1.0.2a, it works well. the configuration of my joomla-smf component also indicates that all is working well.

"installed Install SMF Forum on the same database as Joomla.
done [un-patch] Patch mambo index.php file.
done [un-patch] Patch SMF index.php and Sources/Subs-Post.php file. (Note: Unpatch before upgrading SMF or installing mod.)
done [verify]  Synchronize Joomla and SMF users (optional)."
I already created a menu link to joomla SMF component but when i clicked to the link, the page displays a blank page. i don't know any error related to this. here is my configuration:

PHP: 4.4.1
MySQL: 4.0.23-standard-log
Joomla-SMF 1.0.2a
SMF 1.1 RC2
link: http://orlytarun.frih.net/Joomla/component/option,com_smf/Itemid,52/

thanks in advance