Terminal Not Working

Create a new admin user, log into that, launch Terminal.app, cd over to your problematic /Users/{problem-user} directory, and look around for the errors in the shell login files.

Failing that, close all Terminal.app sessions, navigate to /Users/{problem-user}/Library/Preferences and find and delete the com.apple.Terminal.plist preferences file.

If removing the com.apple.Terminal.plist does not work, then

• Open a Finder window to your Home Folder
• Command-Shift-period
  • This will show all the "hidden" files
• Look for any of the following files:
  • .bash_profile
  • .bash_login
  • .profile
  • .bashrc
• If you have any of these files (you may not), then use the Finder to rename them to something else.
• Quit Terminal.
• Relaunch Terminal.
• Command-Shift-period will again hide all these files that are suppose to be hidden.

If you are using the latest version of Mac OS X you can just call apple support: https://getsupport.apple.com

If you use the beta version of Mac OS X just go to the report app that you get when installing the beta version.

Remember if you use the beta version apple support number won't help you I tried.

This error looks like your account is illegal to there is an error with it.. Why don't you check that your account information is correct? Please tell me what apple support told you if you call :)

Hope I helped you!