//IE10
in fckeditor.js > method : FCKeditor_IsCompatibleBrowser
find this >>
var sBrowserVersion = navigator.appVersion.match(/MSIE (...)/)[1] ;
and replace with >>
var sBrowserVersion = navigator.appVersion.match(/MSIE ([\d.]+)/)[1] ;
in fckeditorcode_ie.js
find
e.scopeName!='HTML'
and change if condition to
if(FCKBrowserInfo.IsIE&& e.scopeName && e.scopeName!='HTML')
find
D.parentElement().document!=B
and change if to
if(D.parentElement().document && D.parentElement().document!=B)
find
B.open("GET",A,false);
and add this
B.open("GET",A,false);
try {
B.responseType = "msxml-document";
} catch(e) {}