Fatal Error conflict with cmp_date2() in common.inc

Error message:
An error occurred. /batch?id=35&op=do
Fatal error: Cannot redeclare cmp_date2() (previously declared in /home/jicny/public_html/drupal/includes/common.inc(1655) : eval()'d code:4) in /home/jicny/public_html/drupal/includes/common.inc(1655) : eval()'d code on line 8

I think this is from civicrm