For some reason, I can edit blog posts and site pages on WP without problem, but when I try to edit my navigation or sidebars, I'm presented with the following when I try and Save my work.
"Error 406
The resource cannot be displayed
The resource you are looking for cannot be opened by your browser."
I've tried to edit from a number of machines so I know it isn't a problem with my own system - is there a simpe explanation for this?
Being a newbie I'd appreciate any help, it's very annoying!