BuddyPress.org

to make registration page multilingual you need to copy the register.php from buddypress/bp-default/registration folder to your themes folder and make your changes by replacing the loop :

http://buddypress.pastebin.com/wC4fCkbT

hope this works for anyone interested..

Edit: this makes only the registration page multilingual, but unfortunately it doesn’t translate the member’s profile view and edit fields.. instead they show what you saved in the profile setup fields in the backend.