With Numinix Product fields the "Condition" fields comes from YOUR_ADMIN\includes\npf_includes\npf_templates\common.php. If this is not duplicated then you are probably calling it twice in the "collect_info.php" file eg look for something like
Code:
         <!--BOF NPF [5 of 6] --><?php
  $dirList = dirList(NPF_INCLUDES_TEMPLATES_FOLDER);
  foreach ($dirList as $file) {
    include(NPF_INCLUDES_TEMPLATES_FOLDER . $file);  
  }
?>
          <!--EOF NPF [5 of 6]-->