Error message with submitting answer using Q & A

Getting this error message:

Warning: Invalid argument supplied for foreach() in /home/fra2010/public_html/my/wp-includes/user.php on line 1079

Warning: Cannot modify header information - headers already sent by (output started at /home/fra2010/public_html/my/wp-includes/user.php:1079) in /home/fra2010/public_html/my/wp-includes/pluggable.php on line 934

Tech specs:
WP 3.3.1
WP-Corporate 1.4.4
BuddyPress 1.5.1
Q & A: 1.0.8