bbPress Cannot modify header error

hi!

WP 3.9.1, bbPress 2.0.1, WP_DEBUG is TRUE
Theme: Newspaper Version: 4.0.1
Plugins: Akismet, Animated Gif Resize, Contact Form 7, Revolution Slider, tagDiv Social Counter, tagDiv speed booster, WPBakery Visual Composer

After install and activaite bbPress take this err in admin panel:
1.
Notice: bp_setup_current_user was called incorrectly. The current user is being initialized without using $wp->init().

2.
in /sata2/home/users/xxx/xxx/xxx/wp-includes/functions.php on line 3245 Warning: Cannot modify header information – headers already sent by (output started at /sata2/home/users/xxx/xxx/xxx/wp-includes/functions.php:3245) in /sata2/home/users/xxx/xxx/xxx/wp-includes/option.php on line 747 Warning: Cannot modify header information – headers already sent by (output started at /sata2/home/users/xxx/xxx/xxx/wp-includes/functions.php:3245) in /sata2/home/users/xxx/xxx/xxx/wp-includes/option.php on line 748

Please help me understand and fix the problem.
thnks!

Thank you! Waiting for a positive result