It was working just fine this morning but suddenly it giving me such error. I tried to uninstall and install it but no luck. Would appreciate if anyone can help me in it.
c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- multi_json (LoadError)
from c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from C:/Users/Somenath/.heroku/client/lib/heroku/helpers.rb:1:in `<top (required)>'
from C:/Users/Somenath/.heroku/client/lib/heroku/cli.rb:1:in `load'
from C:/Users/Somenath/.heroku/client/lib/heroku/cli.rb:1:in `<top (required)>'
from c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from c:/Program Files (x86)/Heroku/bin/heroku:27:in `<main>'