How do I downgrade to an old version of compass using gem install?

Question

I've been using compass from http://compass-style.org/ to manage my sites css for a long time. I just installed the newest version and I get a rather unpleasant error, that has as a side effect corrupted all my css files. How do I downgrade to an older version of this?

Thanks, Matt

Answer 1

sudo gem install compass --version versionnumber