When I comment out the line:
@header('Content-type: application/json; charset=UTF-8');
it works for me
p.s.
- there is also a
closing phpopening tag in it without the word php - there is a closing php tag at the bottom which can be gone
- there is a notice on an undefined index.
- better would be to use $charset = get_option(‘blog_charset’);
I have no idea if this: http://wordpress.org/support/topic/plugin-json-api-content-length-header has something do with it, or this: http://core.trac.wordpress.org/ticket/11537 or this: http://wordpress.org/support/topic/wordpress-gone-wild?replies=3 , did not dive in it.