no cube and unable to rename desktops

[Bill Walton]

I'm running 8.0.4, 64 bit.  I've enabled System -> Appearances -> Visual Effects -> Extra.  I get wobbly windows, but no cube.  I've got 4 desktops and can move between them via mouse or ctrl-alt-arrow but can't get the cube.  Also, when I open Workspace Switcher Preferences I get no option to rename a desktop - only Workspaces columns and rows.  Any help figuring out what I've screwed up would be much appreciated.

TIA,
Bill
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