[Plugin: SimpleModal Login] Error: error

After inserting username and password I get this error message: Error: error

I use WordPress HTTP plugin to force make some of the pages as SSL. Also the wp-login.php and the admin area is under SSL.

Debugging the form I see it posts to the correct SSL link but the wp-login.php loading is suddenly canceled, there is correct request but there is no response (Chrome, developers tools, network).

I am making the call from a non-SSL page

Here is the link: http://www.dentfix.ro The Ctrl-Alt-L is enabled.

http://ww.wp.xz.cn/extend/plugins/simplemodal-login/