Error while posting comment.

I´m testing the free version of this extension and i´m having an error.
I fill the comment box and when i press the "Submit Comment" i get a error message on a pop up window

Status:

200

Status Text:

OK

Response Text:



<!--

if (top.location != document.location)

top.location = document.location;

//-->



[{"type":"success","data":[0,"\n\n\n\n\n\n\t\n\t\n\t\t\t\n\t\t\n\t\t\t<\/a>\n\t<\/div>\n\n\t\n\t\n\t\n\n\t\t\n\t\t\t\n\n\t\t\t\n\t\t\t\n\n\t\n\ttest<\/span>\n\n\t<\/h3>\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\tPermalink<\/a><\/span>\n\n\t\t\t\t\n\t\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\n\t\t\n\t\t\t<\/i>\n\n\t\t\t\n\t\t\t\nsssdff<\/p><\/div>\n\t\t\t\n\t\t\t\n\n\t\t\t\n\t\t\t<\/span>\n\t\t<\/div>\n\n\t\t\n\n\t\t\t\n\t\t\t\t\n\t\t\t\t\n\n\t\t\n\t1 second ago\t<\/time>\n\t\n\t\n\t\t<\/time>\n\t<\/span>\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\n\t\t\n\t\t<\/span>\n\t\t<\/span>\n\t<\/span>\n\thttp:\/\/maps.google.com\/maps?z=15&q=,<\/span>\n\t<\/span>\n\t\t\t<\/div>\n\n\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\n\t\t<\/i>0<\/span><\/b>\n\n\t\t\tLike<\/span><\/a>\n\t\t<\/span>\n\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\n\t\tShare<\/span><\/a>\n\n\n\t\t\n\t\t\t\n\t\t\t\t<\/i>\n\t\t\t\t\n\t\t\t\t\tShort URL:<\/span>\n\t\t\t\t\t\n\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\tFacebook<\/a>\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\tTwitter<\/a>\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\tGoogle Plus<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/i>\n\t\t\t\t<\/span>\n\t\t\t<\/span>\n\t\t<\/span>\n\t<\/span>\n\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<\/li>\n",1]}]

But if i refresh the page, the message is saved and posted on the comments.
Any idea what is the problem?