Error «permission denied» when trying to run Kylix

If you installed as root and accepted the defaults then Kylix was installed under the /root directory. By default the permissions for this directory are 700 so only the root user can access this directory tree for read, write or execute. If users besides root are to use Kylix it must be installed in a directory all will have access to. See the file INSTALL that comes with Kylix for more information.