No release available for sfFormtasticPlugin issue in symfony

I'm using symfony 1.4 doctrine and I'm having a problem. I was going to install the sfFormtasticPlugin into Plugins directory. But when I try to install in the command prompt I got this msg "No release available for sfFormtasticPlugin". I try to find the release of this plugin and even I try to search to google to resolve this bu开发者_Go百科t I found nothing. I wish some one could help me to resolve this issue. Many thanks.

If you said about this plugin,I think you can install it from svn:

cd plugins;
svn co http://svn.symfony-project.com/plugins/sfFormtasticPlugin/trunk/ sfFormtasticPlugin