CKEditor could not be detected in Drupal 7

I method
Edit file in /sites/all/modules/wysiwyg/editors/ckeditor.inc
before:
/*
if (preg_match(‚@version:\’)(?:CKEditor )?(\w\.]+)(?:.+revision:\'([\w]+))?@’, $line, $version))
*/

after:
/*
if (preg_match(‚@version:[\’\”](?:CKEditor )?([\d\.]+)(?:.+revision:[\’\”]([\w]+))?@’, $line, $version))
*/

2 method
Edit file in /sites/all/libraries/ckeditor/ckeditor.js

before:
/*
Copyright (c) 2003-2012, CKSource – Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

after:
/*
Copyright (c) 2003-2012, CKSource – Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
version:’CKEditor 4.1 SVN’,revision:’769d961112
*/

Version and revision details you will find at the beginning of js code: var b={timestamp:”…”,version:”4.1„,revision:”769d961112„…

Reload the wysiwyg profile page (admin/settings/wysiwyg/profile).