This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.
If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.
If you feel there is a bug in CKEditor, go to the development site: http://dev.ckeditor.com/ and file a ticket.
Be sure to read the Bug Reporting Instructions and Ticket Specs articles beforehand in order to make it easier for the developers to examine the issue. Please describe the environment where the error occurs and provide detailed steps to reproduce it.