can't activate rack problem while install spree commerce

ruby-on-rails, spree

Solution

I found similar problems (with difference gem) all over the places and decided to solve it by install a new gem, and uninstall the old one

gem uninstall rack -v 1.0.0

then

gem install rack -v 1.0.1

hope this helps those who have similar problem.

p.s. see someone posting about freezing rails, but I didn't dig into it yet.

Problem

I install spree version 0.9.4 with `gem install spree` and run a set up command `spree mystore` and get this errors messages. Have anybody experienced this whether in spree or not ? ``` D:\Workspaces>spree mystore C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:280:i n `activate': can't activate rack (>= 1.0.1, runtime) for ["spree-0.9.4"], alrea dy activated rack-1.0.0 for ["actionpack-2.3.5", "rails-2.3.5", "spree-0.9.4"] ( Gem::LoadError) from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:296:in `activate' from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:295:in `each' from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:295:in `activate' from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:68:in `gem' from C:/Program Files/BitNami RubyStack/ruby/bin/spree:18 ``` Thanks

Original source