I have installed a new rails project like so:
$ rails new site
and it executes and reaches:
bundle install
<
None of these worked for me. I came up with my own solution. The problem lies in json versions less than 2.0. When I tried to upgrade json, I got an error message about dependency issues with rails and sdoc. Here's what I ended up doing:
gem 'json', '> 2'
Worked for me.