I am getting an Error 406
This error means that the server has rejected your request because of its contents. The explanation for this is technical: some sequences of characters and commands are often used by hackers to exploit security problems in software. Therefore, our firewall inspects all page requests to check for possible hacks. This can be compared to a virus scanner. It could be that your post contains some "dangerous" characters. See if your post contains any weird characters or punctuation which could be the problem, and try submitting it again.
The most common reason for this is the use of brackets/parentheses. And the use of the word 'system'. And especially both together. Try copying your whole post to Notepad, and then pasting/submitting it a chunk at a time into Bluelight. That usually highlights the suspected terrorist part of your post.