Is Edge useable?

I've been trying to begin working with Edge Rails but I'm having
trouble with active_resource not loading. I normally use v 1.2.3 but
started a new project then called rake rails:freeze:edge. Then
immediately ran take test. I get the following error:

No such file to load -- active_resource

Do I have to load some other plugin to use edge?

you need to run "rake rails:freeze:edge" again to install active_resource