Shahrul,
I see the code being inserted now, but it seems like you've found one of the few languages that Facebook doesn't natively support. The language trying to be loaded is "bm_MY".
A full list (in XML form) of support is below. It looks like ms_MY may work for you, but you know you're language and country better than I do.
www.facebook.com/translations/FacebookLocales.xml
For information on how to manually set the language (unfortunately a PHP change for now), please see the following post.
www.sourcecoast.com/forums/topic?id=1562&p=1#p6616
Hope this helps, and sorry for the troubles.