500 Internal Server Error

(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):30: invalid multibyte char (UTF-8)
(tdiary.conf):36: invalid multibyte char (UTF-8)
(tdiary.conf):36: invalid multibyte char (UTF-8)
(tdiary.conf):36: invalid multibyte char (UTF-8)
(tdiary.conf):36: invalid multibyte char (UTF-8)
(tdiary.conf):81: invalid multibyte char (UTF-8)
(tdiary.conf):82: syntax error, unexpected '<', expecting end-of-input
<%=recent_entry%>
^
 (SyntaxError)

/virtual/albireo/public_html/td/tdiary/config.rb:120:in `eval'
/virtual/albireo/public_html/td/tdiary/config.rb:120:in `configure_attrs'
/virtual/albireo/public_html/td/tdiary/config.rb:12:in `initialize'
/virtual/albireo/public_html/td/tdiary/dispatcher/index_main.rb:14:in `new'
/virtual/albireo/public_html/td/tdiary/dispatcher/index_main.rb:14:in `initialize'
/virtual/albireo/public_html/td/tdiary/dispatcher/index_main.rb:6:in `new'
/virtual/albireo/public_html/td/tdiary/dispatcher/index_main.rb:6:in `run'
/virtual/albireo/public_html/td/tdiary/dispatcher.rb:21:in `dispatch_cgi'
index.rb:31:in `<main>'