link_comments -> options gets a broken submit button

Warning: require(./extensions/link_comments/admin_options.php) [function.require]: failed to open stream: No such file or directory in /x/home/example.com/OpenLD_1.2/themes/default/admin/admin_options.php(598) : eval()'d code on line 1

Fatal error: require() [function.require]: Failed opening required './extensions/link_comments/admin_options.php' (include_path='.:/usr/share/php5:/usr/share/php/smarty') in /x/home/example.com/OpenLD_1.2/themes/default/admin/admin_options.php(598) : eval()'d code on line 1