Similar to problem with rack 1.3.2. You have already activated rack 1.3.2, but your Gemfile requires rack 1.2.3 -- I\'m experiencing You have already activated rack 1.6.0,
You have already activated rack 1.6.0,
These issues might arise if you are using local or global gemset for more than one project. Why not create seprate gemset for each project.
You can do this using rvm
Create new gemset
rvm gemset create new_test rvm gemset use new_test bundle install