Language plugin integration (problem)

when I has install “Polylang” plugin, view this error in home:
(http://domain.net/it/)

in http://domain.net/la-comunity-dei-fan/members/barbara/

Warning: Cannot modify header information – headers already sent by (output started at /home/content/85/10463585/html/domain.net/wp-content/plugins/bp-profile-as-homepage-fork/bp-profile-as-homepage-fork.php:34) in /home/content/85/10463585/html/domain.net/wp-includes/pluggable.php on line 875

can please resolved ?
thanks

http://wordpress.org/plugins/bp-profile-as-homepage-fork/