Sorry, how to i get the objects dialog? I press Ctrl-Shift-O but that brings up the objects properties dialog.

I'm fairly new to Inkscape, so apologies if this is an obvious question. So up until recently i had been making use of the layers tab to sort all of the path and objects i was working with. Now I did 'something' to cause all of the paths that were previously listed in the dock to vanish and i have n...