rubygems - Running into gems error on Rails 4 -

i'm relatively new rails, , i'm trying create basic spree app using rails 4.0. tried install extension (spree_fancy) store, , while running bundle exec rails g spree_fancy:install command, keep seeing message:

unsupported rails environment compass. 

before installing extension, see app load on local, i'm met with:

nomethoderror 

and:

undefined method `empty?' nil:nilclass 

i'm assuming error caused spree_fancy. there way fix this? if not, how go removing spree_fancy gem? removed gemfile, ran gem uninstall spree_fancy, , reinstalled bundle, did not seem trick.

any appreciated.

the current released version of spree not support rails 4. there branch of spree supports rails 4 can read more @ spree rails 4 blog post.

i don't believe spree_fancy supports rails 4, relies on compass not support rails 4. there couple of branches support rails 4, spree_fancy isn't configured use them.

short version: spree on rails 4 isn't ready prime time quite yet. if you're new rails, should stick 3.2.x spree. spree on rails 4 ready in few months, , can upgrade then.