Cairo-dock plug-ins error

[jfilipe@localhost ~]$ /usr/bin/cairo-dock -E
warning :  (/home/jfilipe/testes/cairo-dock-core/src/gldit/cairo-dock-opengl.c:cairo_dock_initialize_opengl_backend:208)
  couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...

 ============================================================================
        Cairo-Dock version : 3.0.99.rc1
        Compiled date      : Oct  1 2012 12:35:45
        Built with GTK     : 3.4
        Running with OpenGL: 1
 ============================================================================

sh: line 1:   780 Killed                  ./"WindowsKiller" 1 "/org/cairodock/CairoDock/WindowsKiller" "/home/jfilipe/.config/cairo-dock/current_theme/plug-ins/WindowsKiller/WindowsKiller.conf" "/home/jfilipe/.config/cairo-dock" cairo-dock 759
cairo_dock_register_class_full: assertion `pKeyFile != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion `cImageFile != NULL' failed
CairoKeyBinding '<Control>F12' failed!
warning :  (/home/jfilipe/testes/cairo-dock-core/src/gldit/cairo-dock-keybinder.c:cd_keybinder_bind:282)
  Couldn't bind '<Control>F12' (Log out: Show the log-out menu)
 This shortkey is probably already used by another applet or another application
warning :  (/home/jfilipe/testes/cairo-dock-core/src/gldit/cairo-dock-surface-factory.c:cairo_dock_create_surface_from_image:440)
  This file (/home/m7p/.icons/andrea/scalable/places/folder-grey.svg) doesn't exist or is not readable.
cairo_dock_create_surface_from_image_simple: assertion `cImageFile != NULL' failed
_cd_find_volume_name_from_drive_name: assertion `pDrive != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion `cImageFile != NULL' failed
cd_shortcuts_add_progress_bar (/)
cd_shortcuts_add_progress_bar (CD\DVD Drive)
cd_shortcuts_add_progress_bar (home)
cd_shortcuts_add_progress_bar (WualaDrive)
_cairo_dock_load_default_background (/home/jfilipe/.config/cairo-dock/current_theme/bg.png, 0, 1209x30)
warning :  (/home/jfilipe/testes/cairo-dock-core/src/gldit/cairo-dock-packages.c:cairo_dock_get_url_data_with_post:352)
  an error occured while downloading 'http://download.tuxfamily.org/glxdock/themes/third-party/3.1.0/list.conf' : Timeout was reached
warning :  (/home/jfilipe/testes/cairo-dock-core/src/gldit/cairo-dock-packages.c:cairo_dock_list_net_packages:648)
  couldn't retrieve packages on http://download.tuxfamily.org/glxdock/themes (check that your connection is alive, or retry later)
warning :  (/home/jfilipe/testes/cairo-dock-core/src/gldit/cairo-dock-packages.c:cairo_dock_list_packages:720)
  while listing distant packages in 'http://download.tuxfamily.org/glxdock/themes/third-party/3.1.0' : an error occured while downloading 'http://download.tuxfamily.org/glxdock/themes/third-party/3.1.0/list.conf' : Timeout was reached