Forum

This is the first time in more than three years of using Moodle that I have encountered this error. I created a new course a month ago and now when I try to add a forum or edit a topic heading I get this error after I hit the save button."The server encountered an internal error or misconfiguration and was unable to complete your request."

Here is what is listed in the server's error log:
[Tue Mar 27 05:24:57 2007] [error] [client 202.70.239.85] File does not exist: /home/eflwesl/public_html/500.shtml
[Tue Mar 27 05:23:15 2007] [error] [client 61.197.103.151] File does not exist: /home/eflwesl/public_html/500.shtml
[Tue Mar 27 05:21:53 2007] [error] [client 61.197.103.151] File does not exist: /home/eflwesl/public_html/404.shtml

I cannot understand how the file does not exist as I am creating it by hitting the save button, am I not? Puzzled and stressed with the new semester starting soon. Does anyone have any suggestions?

Richard