Internal Error

[txt23]

How can I fix this?



[Tue May 17 18:57:08 2011] [error] [client 65.52.xxx.xx] (13)Permission denied: exec of '/home/domain/public_html/cgi-bin/index_dl.cgi' failed
[Tue May 17 18:57:08 2011] [error] [client 65.52.xxx.xx] Premature end of script headers: index_dl.cgi
[Tue May 17 18:57:08 2011] [error] [client 65.52.xxx.xx] File does not exist: /home/domain/public_html/500.shtml
[Tue May 17 18:57:28 2011] [error] [client 67.170.xxx.xxx] /usr/bin/perl: symbol lookup error: Modules/WSD/Filter50864.so: undefined symbol: Perl_Tstack_sp_ptr
[Tue May 17 18:57:28 2011] [error] [client 67.170.xxx.xxx] Premature end of script headers: install.cgi
[Tue May 17 18:57:28 2011] [error] [client 67.170.xxx.xxx] File does not exist: /home/domain/public_html/500.shtml
[Tue May 17 18:57:29 2011] [error] [client 67.170.xxx.xxx] File does not exist: /home/domain/public_html/favicon.ico