Help w/ error message wp debug

Ran wp debug, got this message. Notice: Undefined index: clone_fields in /home/mtbmtbco/public_html/wp-content/plugins/profile-custom-content-type/views/fields/db-field.php on line 82

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/mtbmtbco/public_html/wp-content/plugins/profile-custom-content-type/views/fields/db-field.php:82) in /home/mtbmtbco/public_html/wp-content/plugins/classifieds/core/core.php on line 1018

What should be done to fix it?