Malformed header (was working fine suddeny have this error)

I have used the Advanced guestbook for years with no problems, I have not made any changes to it but now suddenly it is sometimes giving internal server errors when an entry is added or previewed. http://www.mytammy.co.uk/memorials/index.php

The error in the log file is below

[Fri Apr 01 10:51:51 2011] [error] [client 91.104.158.134] malformed header from script. Bad header=/home/sites/mytammy.co.uk/dead: addentry.php, referer: http://www.mytammy.co.uk/memorials/addentry.php

I used the cgi scripts that my web host had in the control panel but they have told me they don't give support for the scripts as they did not write them.

Could anyone here please give me any help to find out what the problem is?

Thank you

If it's suddenly started happening and you have changed nothing then the fault is at their end and it's up to them to fix it. Is the database server on the same machine as your website? Just check the config.inc.php file in the admin folder for the database location.

This message was edited 1 time. Last update was at 01/04/2011 17:56:18

Thank you for your reply, I have contacted my web hosting company again and hopefully they will help me. I think my website is on the same server as the database my Web Server:web246

and this is the info in the config file

<edit>info removed by Carbonize</edit>

Thanks

Hmm no the MySQL server is on the same machine as your site. Definitely a new error message to me.

OK Just tested and you can post but then you get the error message. I'm wondering if it's something to do with the email sending. Do you have notifications enabled?

Email me your addentry.php file from the lib folder to webmaster@carbonize.co.uk

thank you again, I have emailed my addentry.php file to you. I do have email notifications on I will turn them off and hope that helps.