JSON error on Mass Mail

Invalid JSON: <script type="text/javascript"> if (document.getElementById){ document.write('<style type="text/css">') document.write('.multiparts, #formnavigation{display:none;}') document.write('</style>') } var curpart=0 function getElementbyClass(classname){ partscollect=new Array() var inc=0 var alltags=document.all? document.all : document.getElementsByTagName("*") for (i=0; i<alltags.length; i++){ if (alltags[i].className==classname) partscollect[inc++]=alltags[i] } } function cycleforward(){ partscollect[curpart].style.display="none" curpart=(curpart<partscollect.length-1)? curpart+1 : 0 partscollect[curpart].style.display="block" updatenav() } function cycleback(){ partscollect[curpart].style.display="none" curpart=(curpart>0)? curpart-1 : partscollect.length-1 partscollect[curpart].style.display="block" updatenav() } function updatenav(){ document.getElementById("backbutton").style.visibility=(curpart==0)? "hidden" : "visible" document.getElementById("forwardbutton").style.visibility=(curpart==partscollect.length-1)? "hidden" : "visible" } function onloadfunct(){ getElementbyClass("multiparts") partscollect[0].style.display="block" document.getElementById("formnavigation").style.display="block" updatenav() } if (window.addEventListener) window.addEventListener("load", onloadfunct, false) else if (window.attachEvent) window.attachEvent("onload", onloadfunct) else if (document.getElementById) window.onload=onloadfunct </script> {"result":2,"htmlcontent":"<h3>Sent email to 1 of 1 users<\/h3>\n<h4>Just sent 1 emails to following users: <\/h4>\n<div>admin<\/div>\n<h3>Your email has been sent.<\/h3>\n <table cellpadding=\"4\" cellspacing=\"0\" border=\"0\" width=\"100%\" class=\"adminlist\">\n <thead>\n <tr>\n <th colspan=\"2\" width=\"100%\" class=\"title\">Email Sent<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td width=\"15%\" class=\"captionCell\">Email Subject:<\/td>\n <td width=\"85%\" class=\"fieldCell\">\n Test <\/td>\n <\/tr>\n <tr>\n <td class=\"captionCell\">Email Message:<\/td>\n <td class=\"fieldCell\">\n <p>test test<\/p> <\/td>\n <\/tr>\n <\/tbody>\n <tfoot>\n <tr>\n <th align=\"center\" colspan=\"2\"> <\/th>\n <\/tr>\n <\/tfoot>\n <\/table>\n\n<h3><a href=\"index.php? option=com_comprofiler&task=showusers\">Click here to go back to users management<\/a><\/h3>\n\n"}