title: After I Had To Force Terminal Restart, I Can't Run "rails s" command again
body: <p>I was using the terminal as always, when it froze. I had to restart the VM (Ubuntu x64) and load it again. But after restarting, I could not use the command <code>rails s</code> again, and it logged this on the terminal:
  <a href="http://pastebin.com/raw/v7tfGWBk" rel="nofollow noreferrer">http://pastebin.com/raw/v7tfGWBk</a></p>
  
  <p>Ps: I already tried to run bundle install/update and look for doubled ruby processes on System Monitor</p>
  
  <p>Ps2: I can still use other commands such as <code>rails new test12</code></p>