'Metasploit Requires the Bundler Gem to Be Installed' Error

I have been getting this error while running './msfconsole'.

root@keller-desktop:/opt/metasploit-framework# ./msfconsole

* Metasploit requires the Bundler gem to be installed

$ gem install bundler

I have searched the net and performed the following trobleshooting but with no luck.

''root@keller-desktop:/opt/metasploit-framework# gem install bundler

Fetching: bundler-1.5.3.gem (100%)

Successfully installed bundler-1.5.3

1 gem installed

Installing ri documentation for bundler-1.5.3...

Installing RDoc documentation for bundler-1.5.3...'

'root@keller-desktop:/opt/metasploit-framework# bundle install

Fetching gem metadata from https://rubygems.org/.........

Fetching additional metadata from https://rubygems.org/..

Installing rake (10.2.2)

Installing i18n (0.6.9)

Installing multijson (1.0.4)

Installing activesupport (3.2.17)

Installing builder (3.0.4)

Installing activemodel (3.2.17)

Installing arel (3.0.3)

Installing tzinfo (0.3.39)

Installing activerecord (3.2.17)

Installing bcrypt (3.1.7)

Installing bcrypt-ruby (3.1.5)

Installing databasecleaner (1.2.0)

Installing diff-lcs (1.2.5)

Installing factorygirl (4.4.0)

Installing fivemat (1.2.1)

Installing json (1.8.1)

Installing pg (0.17.1)

Installing metasploitdatamodels (0.17.0)

Installing miniportile (0.5.3)

Installing msgpack (0.5.8)

Installing networkinterface (0.0.1)

Installing nokogiri (1.6.1)

Installing packetfu (1.1.9)

Installing pcaprub (0.11.3)

Installing redcarpet (3.1.1)

Installing robots (0.10.1)

Installing rspec-core (2.14.8)

Installing rspec-expectations (2.14.5)

Installing rspec-mocks (2.14.6)

Installing rspec (2.14.1)

Installing shoulda-matchers (2.5.0)

Installing simplecov-html (0.5.3)

Installing simplecov (0.5.4)

Installing timecop (0.7.1)

Installing yard (0.8.7.4)

Using bundler (1.5.3)

Your bundle is complete!

Use `bundle show gemname` to see where a bundled gem is installed.

Post-install message from bcrypt-ruby:

#######################################################

The bcrypt-ruby gem has changed its name to just bcrypt. Instead of

installing `bcrypt-ruby`, you should install `bcrypt`. Please update your

dependencies accordingly.

#######################################################"

I have also tried " gem update --system", "sudo apt-get install rubygems"

well basically eveything i could think of. The result is still the same.

Can someone help me with this issue.