BuddyPress.org

Hello.
I am in development of a custom wordpress theme from scratch.
I have installed buddypress and i have copied the folder “buddypress” from the path “/plugins/buddypress/bp-templates/bp-nouveau/buddypress to my theme folder. The path is “mytheme/buddypress”
I have tried and with the bp-legacy folder but nothing happened.
When i open a page of bpress i have a white page.
My index.php and page.php has the content(); inside them only..
Any help??

Thank u,
George