I have tried to follow the best answer on this question Is there an Ubuntu theme available to make it look like Windows 7? but when I enter this code ./win7-setup.sh
I get this error:
And I have tried to run this command in "GNOME", "GNOME Classic" and "GNOME Classic(No effects)"
I'm running Ubuntu 12.04 64bit.
EDIT:
I have installed gdm and tried using gnome-classic with gdm and got the same error.