Apache Error 406
From IkonWiki
Example Error Message:
Not Acceptable An appropriate representation of the requested resource /index.cgi could not be found on this server. Apache/1.3.37 Server at mywebsite.com Port 80
Cause overview:
This error tends to be connected to an Apache mod_security setting. By default GET requests are scanned, the error tends to occur where the host has modified the setting so that POST requests are also scanned.
Solution:
Create a .htaccess file and put the following in the file...
<IfModule mod_security.c> SecFilterScanPOST Off </IfModule>
...upload this file to the root directory of your board (eg. http://www.mysite.com/cgi-bin/forums).

