failed to install acts_as_ferret plugin

After enter in the command line :ruby script/plugin install
under WIndows XP , nothing happened. I wonder why? Thank you for your

any help?

This happens when you dont have svn installed on your system as you
can see svn:// at the beginning of the uri which expects you to have

You can check this by just typing svn on your command line.

Grab it from here
then everything will work smoothly. Guess the correct version for you
is given at the bottom of the page ,