Profile-pic plugins error message please help!!!!!!

Warning: Invalid argument supplied for foreach() in /home7/dethrrse/public_html/wp-content/plugins/profile-pic/profile-pic.php on line 422

Warning: Cannot modify header information - headers already sent by (output started at /home7/dethrrse/public_html/wp-content/plugins/profile-pic/profile-pic.php:422) in /home7/dethrrse/public_html/wp-includes/pluggable.php on line 868

Could someone help me figured out what it means and how to fix that error get that message after uploading a picture…everything works fine and I still get that message!