Unity bar & Dock Missing after messing with Compiz settings

Hi jorge. If you can open a Terminal, please press Alt + Ctrl + T then type 'compiz --replace'. That should reload Compiz. You can post screenshots here if possible.

I cannot open the terminal, because i cannot open any application! (i've managed to open firefox clicking in a link i had saved)
Check out this screenshot
http://k.minus.com/j038MwUPQpHPu.png
Notice how all the features for the right side are missing (volume control, mail, time & hour, shutdown options, etc...)

Thank you a lot for answering so fast!

I did the ''compiz --replace'' thing and everything dissapeared for a second, but nothing changed

Try to login then open a terminal by hitting CTRL + ALT + T. In the terminal run the command:
sudo apt-get install compizconfig-settings-manager
ccsm

then try to enable the Unity plugin.

If this not works try to run this command in the terminal:
gconftool-2 --recursive-unset /apps/compiz-1
unity --reset

For:
sudo apt-get install compizconfig-settings-manager
ccsm

I got a message saying i had the lastest version already installed

and for:
gconftool-2 --recursive-unset /apps/compiz-1
unity --reset

Everything disappeared and then the terminal said this:

~$ gconftool-2 --recursive-unset /apps/compiz-1

jorge@jorge-EX248AA-ABM-SR1815LA-LA620:~$ unity --reset
unity-panel-service: no process found
Checking if settings need to be migrated ...no
Checking if internal files need to be migrated ...no
Backend : gconf
Integration : true
Profile : default
Adding plugins
Skipping upgrade com.canonical.unity.unity.01.upgrade
Skipping upgrade com.canonical.unity.unity.02.upgrade
Initializing core options...done
Initializing bailer options...done
Initializing detection options...done
Initializing composite options...done
Initializing opengl options...done
Initializing decor options...done
Initializing mousepoll options...done
Initializing vpswitch options...done
Initializing animation options...done
Initializing snap options...done
compiz (expo) - Warn: failed to bind image to texture
Initializing expo options...done
Initializing move options...done
Initializing place options...done
Initializing grid options...done
Initializing gnomecompat options...done
Initializing wall options...done
Initializing ezoom options...done
Initializing workarounds options...done
Initializing staticswitcher options...[ERROR]: Option "next_button" already defined
[ERROR]: Option "next_key" already defined
[ERROR]: Option "prev_button" already defined
[ERROR]: Option "prev_key" already defined
[ERROR]: Option "next_all_button" already defined
[ERROR]: Option "next_all_key" already defined
[ERROR]: Option "prev_all_button" already defined
[ERROR]: Option "prev_all_key" already defined
[ERROR]: Option "next_group_button" already defined
[ERROR]: Option "next_group_key" already defined
[ERROR]: Option "prev_group_button" already defined
[ERROR]: Option "prev_group_key" already defined
[ERROR]: Option "next_no_popup_button" already defined
[ERROR]: Option "next_no_popup_key" already defined
[ERROR]: Option "prev_no_popup_button" already defined
[ERROR]: Option "prev_no_popup_key" already defined
[ERROR]: Option "next_panel_button" already defined
[ERROR]: Option "next_panel_key" already defined
[ERROR]: Option "prev_panel_button" already defined
[ERROR]: Option "prev_panel_key" already defined
[ERROR]: Option "speed" already defined
[ERROR]: Option "timestep" already defined
[ERROR]: Option "window_match" already defined
[ERROR]: Option "minimized" already defined
[ERROR]: Option "auto_change_vp" already defined
[ERROR]: Option "popup_delay" already defined
[ERROR]: Option "mouse_select" already defined
[ERROR]: Option "saturation" already defined
[ERROR]: Option "brightness" already defined
[ERROR]: Option "opacity" already defined
[ERROR]: Option "icon" already defined
[ERROR]: Option "icon_only" already defined
[ERROR]: Option "mipmap" already defined
[ERROR]: Option "row_align" already defined
[ERROR]: Option "focus_on_switch" already defined
[ERROR]: Option "bring_to_front" already defined
[ERROR]: Option "highlight_mode" already defined
[ERROR]: Option "highlight_rect_hidden" already defined
[ERROR]: Option "highlight_color" already defined
[ERROR]: Option "highlight_border_color" already defined
[ERROR]: Option "highlight_border_inlay_color" already defined
done
Initializing resize options...done
Initializing fade options...done
Initializing scale options...done
Initializing session options...done

On an unrelated note: I logged of and tried ''ubuntu 2d''
Everything is fine this way, what is the difference between normal ubuntu and 2d?

The normal Ubuntu use Unity 3D. Unity 2D is written for the computer that not works with Unity 3D but you can use it if you want without problem in any way. Unity 2D it's very similar to Unity 3D.

I guess i will migrate to 2d...
Thanks a lot for the help