This program must be able to create this directory: <%= @dir %> However, it was unable to do that because of incorrect permissions on parent directories. The parent directories must allow the <%= @myself %>b> user (which this program is running as) to create the directory that we want. Please fix the permissions on all parent directories, then re-run this program. If you don't know how to fix permissions, please search the Internet and learn about how Unix permissions works. These are good tutorials: * http://www.tutorialspoint.com/unix/unix-file-permission.htm * http://www.perlfect.com/articles/chmod.shtml * http://www.linux.com/learn/tutorials/309527-understanding-linux-file-permissions