Window manager not finding themes after gnome install

[rimbaum]

I have an ASUS x501a that I installed Mint 14 Cinnamon 64-bit onto. After I ran updates, I attempted to install GNOME 3, and apparently attempting to install GNOME caused my window manager (presumably Metacity) to break. The first thing I tried was metacity --replace, and it returned me with

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becca@becca-notebook ~ $ metacity --replace
Window manager warning: Failed to load theme "Adwaita": Failed to find a valid file for theme Adwaita

And so on with each theme I'd installed, ending in

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Window manager error: Could not find a theme! Be sure /usr/share/themes exists and contains the usual themes.


I could only access anything on my desktop at all if I switched to fallback mode, and even then none of the windows had title bars. Interestingly enough, running "sudo metacity --replace" resulted in getting me the window title bars, but the gtk+ themes still aren't running. Also interestingly, opening a folder in Nemo as root gets everything looking normal.

I attached a screenshot so you can see the end result of what I have so far. If I can get any tips on how to get everything working properly again so I can actually use GNOME 3 (or even cinnamon!) instead of the fallback mode, it'd be greatly appreciated.