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Yesterday I ran the system update and mistakenly installed Command Line Tools for Xcode 11 beta 1 in a system running macOS Mojave.

This update is breaking some of my dev applications. I would like to downgrade back to the current public release of Command Line Tools for macOS Mojave 10.14/Xcode 10.2.1.

How do I uninstall them? Is it possible to do without uninstalling Xcode?

I am running macOS Mojave 10.14.5 with Xcode 10.2.1.

➜ ls -l /Library/Developer                 
total 0
drwxr-xr-x 6 root 192 Jun  5 10:08 CommandLineTools
drwxr-xr-x 4 root 128 Apr 23 11:39 PrivateFrameworks
➜ ls -l /Library/Developer/CommandLineTools
total 0
drwxr-xr-x 5 root 160 Apr  6 02:30 Library
drwxr-xr-x 3 root  96 Apr  6 01:55 Packages
drwxr-xr-x 4 root 128 Jun  5 10:09 SDKs
drwxr-xr-x 7 root 224 Apr  6 02:30 usr


So it seems that the beta version of the CLTools are messing something up in the mono library. As all mono applications are crashing. Tried different applications build with mono.

I tried the remove instructions and also completely uninstalled / reinstalled xcode.

However, the issue is still the same. All mono applications are crashing!

marked as duplicate by grg Jun 5 at 8:16

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • Welcome to Ask Different :) Can you share the output of running ls -l /Library/Developer and ls -l /Library/Developer/CommandLineTools? – Nimesh Neema Jun 5 at 8:10
  • Sure, updated my initial post. – Jakub Juszczak Jun 5 at 8:16
  • You can go through the linked duplicate to find instructions on how to remove the beta Command Line Tools. – Nimesh Neema Jun 5 at 8:19
  • The instructions do not help. As it seems that they do not remove everything. I tried the instructions. I also completely removed xcode and reinstalled it. But applications are still crashing. – Jakub Juszczak Jun 6 at 9:40

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