Troubleshooting
- Glen Steedman
- 1 macOS
- 1.1 Cannot open PreYarn
- 1.2 Rosetta
- 1.3 Corrupted File
macOS
This applies to both macOS Sequoia (15.x) and macOS Sonoma (14.x)
Cannot open PreYarn
Each Release of macOS makes changes to the gatekeeper security feature which may cause issues launching PreYarn, Refer to Safely open apps on your Mac - Apple Support for more details.
Below outlines 2 workarounds.
Depending on your macOS version you may only be able to use method 2
Method 1
Right Click on PreYarn (or press control and click on PreYarn)
Select Open (you may be prompted for your password or fingerprint if you have Touch ID)
Method 2
macOS will show any applications that were blocked for about an hour, to see the apps that have been blocked
open the system settings menu
Scroll down to Privacy and Security Tab, find the section highlighted and press Open Anyway for PreYarn
You may get a prompt for your password or TouchID
Press Open
Rosetta
You may be prompted to install Rosetta depending on the version of PreYarn and the platform (intel or mac silicon)
Corrupted File
Launching PreYarn fails with the following, this is most likely due to the file being corrupted , redownload again or reachout to yarnlab support.
