I hope someone will have an answer:((((

When I modify component configuration, It goes to blank page and nothing modified!!.. I can not change any configuration at component..

When this problem appeared, I was using the older version. Now I upgraded latest version 3.6., still same problem... Please help..

Same here.
I just installed JoomSEF, most of the things work right from the start, have to adjust some others, but when i open "manage extensions - component" whatever I do, the result is the same - I can change settings, but whatever I click after that - Save, Apply or Exit I get the same error page
<i>Not Acceptable
An appropriate representation of the requested resource /administrator/index.php could not be found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.</i>
The only way out is click back two-three times.

Hello,

This seems like a problem with the security settings of your web server. I've found some information about this on the internet:
community.contractwebdevelopment.com/406...found-on-this-server
www.checkupdown.com/status/E406.html

It seems that when saving configuration, it sends some data to your server, which it thinks is a spam or something. You will probably need to contact your web host to find the exact problem and fix it.

Best regards,
ARTIO Support Team