Terminal fails with a “Could not create a new process and open a pseudo-tty.” message

Question

Yesterday, I upgraded my Mac to Mac OS X 10.9 (Mavericks), and since then I couldn’t open the “Terminal,” each time I open a session, the following error is shown:

[Could not create a new process and open a pseudo-tty.]
[Command not found: tmux]

I don’t know what's causing this issue and a fresh restart and killing the relevant processes on activity monitor doesn’t help. Any thoughts?

Balu · Answer

Do this
terminal>preferences>general>shells open with
then click on "default login shell"

Praym · Answer

I was getting similar error. So to fix it, within Terminal, I opened

Preferences > General

and set

'Shells open with': to 'Default login shell'.

I then quit and started the terminal app again and the error was gone.

Hope this helps.

Max Oriola · Answer

I got this error after upgrading from Lion (10.7) to Mavericks. (10.9)
This fixed it:
Go to Terminal > Preferences > Settings > Shell
and uncheck "Run command".

user279065 · Answer

It might be a simple and going into Preferences/Startup/Shells open with and select 'Default login shell'.

It is related to where the Shell you are opening, and you can have multiply shells (but that is another thread'

Terminal fails with a “Could not create a new process and open a pseudo-tty.” message

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