title: Tmux - Creating new sessions display some list of errors
body: <p>How can i fix this anyone please? 
  When i create a new session <code>tmux new -s sample_session</code> The list of errors always appeared.</p>
  
  <ul>
  <li>home/glennfield/.tmux.conf:3: unknown command: bell-action</li>
  <li>/home/glennfield/.tmux.conf:4: unknown command: bell-on-alert</li>
  <li>/home/glennfield/.tmux.conf:5: unknown command: default-command</li>
  <li>/home/glennfield/.tmux.conf:6: unknown command: default-shell</li>
  <li>/home/glennfield/.tmux.conf:7: unknown command: default-terminal</li>
  <li>/home/glennfield/.tmux.conf:8: unknown command: destroy-unattached</li>
  <li>/home/glennfield/.tmux.conf:9: unknown command: detach-on-destroy</li>
  <li><p>/home/glennfield/.tmux.conf:10: unknown command: display-panes-active-- colour</p>
  
  <p><em>Here's my tmux.conf</em>  </p></li>
  </ul>
  
  <p>assume-paste-time 1<br>
  base-index 0<br>
  bell-action any<br>
  bell-on-alert off<br>
  default-command ""<br>
  default-shell "/bin/bash"<br>
  default-terminal "screen"<br>
  destroy-unattached off<br>
  detach-on-destroy on<br>
  display-panes-active-colour red<br>
  display-panes-colour blue<br>
  display-panes-time 1000<br>
  display-time 750<br>
  history-limit 2000<br>
  lock-after-time 0<br>
  lock-command "lock -np"<br>
  lock-server on<br>
  message-command-style fg=yellow,bg=black<br>
  message-style fg=black,bg=yellow<br>
  mouse-resize-pane off<br>
  mouse-select-pane off<br>
  mouse-select-window off<br>
  mouse-utf8 on<br>
  prefix C-b<br>
  prefix2 none<br>
  renumber-windows off<br>
  repeat-time 500<br>
  set-remain-on-exit off<br>
  set-titles off<br>
  set-titles-string "#S:#I:#W - "#T""<br>
  status on<br>
  status-interval 15<br>
  status-justify left<br>
  status-keys vi<br>
  status-left "[#S] "<br>
  status-left-length 10<br>
  status-left-style default<br>
  status-position bottom<br>
  status-right " "#{=21:pane_title}" %H:%M %d-%b-%y"<br>
  status-right-length 40<br>
  status-right-style default<br>
  status-style fg=black,bg=green<br>
  status-utf8 on<br>
  update-environment "DISPLAY SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID<br>
  SSH_CONNECTION WINDOWID XAUTHORITY"<br>
  visual-activity off<br>
  visual-bell off<br>
  visual-silence off<br>
  word-separators " -_@"</p>