I've installed the lucid-10 package without any problem though.
maybe you've just ran the update during the repository update ?

2010/4/22 arno_b <email address hidden>

> Did you forget to compile the plugins with the last version?...
>
> --
> [lucid] cannot start cairo-dock since last updates
> https://bugs.launchpad.net/bugs/568258
> You received this bug notification because you are a member of Cairo-
> Dock Team, which is subscribed to cairo-dock in ubuntu.
>
> Status in “cairo-dock” package in Ubuntu: New
>
> Bug description:
> Binary package hint: cairo-dock
>
> On lucid, after the updates of this morning, cairo-dock does not want to
> start. It says:
> "no plugin were found
> Plug-in provides...
> ..."
>
> I only use official packages.
> After a purge, a reinstall, and a removing of folder .config/cairo-dock,
> the problem is still here.
> It happens for both with openGL and without.
>
> When I start cairo-dock in command line, it gives me the following log:
>
>
>  ============================================================================
>        Cairo-Dock version: 2.1.3-10-lucid
>        Compiled date:  Apr 22 2010 01:10:48
>        Running with OpenGL: 1
>
>  ============================================================================
>
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-quick-browser.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-tomboy.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-show_mouse.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-systray.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-clock.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-shortcuts.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-Toons.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-mail.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-switcher.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-keyboard-indicator.so') was
> compiled with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-showDesktop.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-Clipper.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-drop_indicator.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-terminal.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-weblets.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-dialog-rendering.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-RSSreader.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-System-Monitor.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-musicPlayer.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-rendering.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-dustbin.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-illusion.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-AlsaMixer.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-Xgamma.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-motion_blur.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  while opening module '/usr/lib/cairo-dock/libcd_xfce-integration.so' :
> (libthunar-vfs-1.so.2: Ne peut ouvrir le fichier d'objet partagé: Aucun
> fichier ou dossier de ce type)
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-weather.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-slider.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-netspeed.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-Animated-icons.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-icon-effect.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-Cairo-Penguin.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd_gnome-integration.so') was
> compiled with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-desklet-rendering.so') was
> compiled with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-compiz-icon.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-stack.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-GMenu.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-wifi.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-logout.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-dnd2share.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-powermanager.so') was compiled
> with Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> warning :
>  (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:373)
>  this module ('/usr/lib/cairo-dock/libcd-Dbus.so') was compiled with
> Cairo-Dock v2.1.3-6, but Cairo-Dock is in v2.1.3-10-lucid
>  It will be ignored
> OpenGL config summary :
>  - bNonPowerOfTwoAvailable : 1
>  - bPBufferAvailable : 1
>  - direct rendering : 1
>  - bTextureFromPixmapAvailable : 1
>  - GLX version : 1.4
>  - OpenGL version: 3.2.0 NVIDIA 195.36.15
>  - OpenGL vendor: NVIDIA Corporation
>  - OpenGL renderer: Quadro NVS 160M/PCI/SSE2
>
> activating pbuffer, usually buggy drivers will crash here ... ok, they are
> fine enough.
> warning :
>  (cairo-dock-launcher-factory.c:cairo_dock_load_icon_info_from_desktop_file:406)
>  while trying to load 01empathy.desktop : Le fichier de clés n'a pas de clé
> « Is container »
> warning :
>  (cairo-dock-launcher-factory.c:cairo_dock_load_icon_info_from_desktop_file:406)
>  while trying to load 01gcalctool.desktop : Le fichier de clés n'a pas de
> clé « Is container »
> warning :
>  (cairo-dock-launcher-factory.c:cairo_dock_load_icon_info_from_desktop_file:406)
>  while trying to load 01inkscape.desktop : Le fichier de clés n'a pas de
> clé « Is container »
> warning :
>  (cairo-dock-launcher-factory.c:cairo_dock_load_icon_info_from_desktop_file:406)
>  while trying to load 01f-spot.desktop : Le fichier de clés n'a pas de clé
> « Is container »
> cairo_dock_create_surface_from_image_simple: assertion `cImageFile != NULL'
> failed
> cairo_dock_create_surface_from_image_simple: assertion `cImageFile != NULL'
> failed
> debut de boucle bloquante ...
>  -> action !
> fin de boucle bloquante -> 0
>
>
>
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