Blank pages usually are an error of some form. First up, you can if possible look in your error logs. Next up, I’d double check the theme you’re using doesn’t already support BuddyPress – sometimes you can get an error if using the template pack and the theme supports BuddyPress without it (most BuddyPress themes do).
theme is not support buddypress but when i delet buddypress plugin from server using ftp site is working fine but buddypress feature are not working
I got the same problem. I’m using a buddypress child friendly theme all works except for the forum page which turn totally white. What can I do?
In all cases install WP – ensure WP is running properly; Install BP activate bp-default theme – check BP is running properly, only after those two steps should you proceed to activating a child theme or custom theme. If that theme does not work as expected / required then you must take it to the theme author in the first instance, this help forum can’t really support custom themes it’s here to support BP core and the default theme.
However things will get easier soon when 1.7 is released which will work far better with any theme chosen.