I'm sorry if this is a newbie question. Last week I set up a wiki for the first time and everything worked for several days. I was able to edit pages, etc. During the work week I did not use the wiki and it's unlikely anyone else did, unless someone just tripped over it. Yesterday, my site was down and I got the following server error:

"Premature end of script headers: /home/xxxxx/public_html/wiki/index.php Failed loading"

...when I try to go to the home page. The browser gives a "500 server error" message. Given that I have not touched the site in days, does anyone have any ideas what would cause this error in index.php?

Thanks,

--Bruce