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iOS

Build Succeeded, then Crash

I've just started to use Treehouse and can't even run the very first program, when i hit play it says "Build Succeeded" then crashes with a window that says "process launch failed: invalid host string: '(null)'". I've tried restarting my computer I've uninstalled and reinstalled Xcode and it does the exact same thing. Anyone have any suggestions? All wisdom is highly appreciated!

Can you upload your code

// // main.c // MyFirstCProgram // // Created by turner on 9/26/13. // Copyright (c) 2013 treehouse. All rights reserved. //

include <stdio.h>

int main() {

// insert code here...
printf("Hello, World!\n");
return 0;

}

1 Answer

see the following Stack Overflow post for a solution to your problem:

http://stackoverflow.com/questions/9832234/xcode-error-failed-to-launch-directory-invalid-host-string-localhost

from one of the answers:

Xcode error Invalid string localhost

open terminal

//type

sudo nano /etc/hosts // it may ask for password , enter the password;

// copy and paste this

127.0.0.1 localhost 255.255.255.255 broadcasthost ::1 localhost fe80::1%lo0 localhost then press control-o and then press enter and then press control-x

//then type

dscacheutil -flushcache

Awesome thanks heaps!!!