[求助]安裝Instant Messenger + User status MOD 0.4.1出現Fatal error

[Inuta]

小弟使用AutoMod安裝完Instant Messenger + User status MOD 0.4.1後
沒想到整個網站出現了Fatal error且不可瀏覽網站(使用Goole 瀏覽器時)

如圖:

以下為錯誤代碼:

代碼: 選擇全部

Fatal error: Cannot redeclare display_forums() (previously declared in /home/wppbbs/public_html/includes/functions_display.php:22) in /home/wppbbs/public_html/includes/functions_display.php on line 516

但換Firefox和IE時
出現了其他錯誤代碼但可以正常瀏覽

如圖:

以下為錯誤代碼:

代碼: 選擇全部

phpBB Debug] PHP Notice: in file /includes/session.php on line 1007: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/session.php on line 1007: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/session.php on line 1007: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4357: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4359: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4360: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4361: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)

請問如何解決問題?
拜託大大們為小弟解決問題 謝謝!

補充外掛連結:
[推薦] 一款仿Facebook 的功能BAR外掛(mdtom大大介紹這支外掛時似乎還是舊有名稱和版本)
http://www.phpbb3hacks.com/viewtopic.php?f=71&t=367

[心靈捕手]

但換Firefox和IE時
出現了其他錯誤代碼但可以正常瀏覽

如圖:

以下為錯誤代碼:

代碼: 選擇全部

phpBB Debug] PHP Notice: in file /includes/session.php on line 1007: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/session.php on line 1007: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/session.php on line 1007: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4357: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4359: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4360: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4361: Cannot modify header information - headers already sent by (output started at /instant_messenger.php:460)

通常會出現類似的錯誤代碼，主要是您修改檔案後，存檔的編碼有誤。
建議您：
檢視除了以 AutoMOD 安裝之外，手動修改的檔案，其編碼格式是否正確為 UTF-8 (不含 BOM)？