http://sir.co.kr/bbs/tb.php/g4_tiptech/471
출석부를 다운받아 설치 후에 다음과 같은 에러라 뜬 후에 메인페이지가 출력됩니다.

홈피 : www.wando.info
:::::::::::::::::::: 아래 에러 ::::::::::
Warning: main(../common.php): failed to open stream: 그런 파일이나 디렉토리가 없음 in /free/home/wando/html/gnuboard4/extend/attendance.php on line 3

Warning: main(): Failed opening '../common.php' for inclusion (include_path='.:/usr/local/lib/php') in /free/home/wando/html/gnuboard4/extend/attendance.php on line 3

Warning: Cannot modify header information - headers already sent by (output started at /free/home/wando/html/gnuboard4/extend/attendance.php:3) in /free/home/wando/html/gnuboard4/head.sub.php on line 55

Warning: Cannot modify header information - headers already sent by (output started at /free/home/wando/html/gnuboard4/extend/attendance.php:3) in /free/home/wando/html/gnuboard4/head.sub.php on line 57

Warning: Cannot modify header information - headers already sent by (output started at /free/home/wando/html/gnuboard4/extend/attendance.php:3) in /free/home/wando/html/gnuboard4/head.sub.php on line 58

Warning: Cannot modify header information - headers already sent by (output started at /free/home/wando/html/gnuboard4/extend/attendance.php:3) in /free/home/wando/html/gnuboard4/head.sub.php on line 59

Warning: Cannot modify header information - headers already sent by (output started at /free/home/wando/html/gnuboard4/extend/attendance.php:3) in /free/home/wando/html/gnuboard4/head.sub.php on line 60

Warning: Cannot modify header information - headers already sent by (output started at /free/home/wando/html/gnuboard4/extend/attendance.php:3) in /free/home/wando/html/gnuboard4/head.sub.php on line 61

이후 정상적인 홈피가 아래로 펼쳐집니다.
해결책 좀 부탁드립니다.
오늘도 행복한 시간이 되시길....