How To Correctly Update MainStage

Apple periodically releases updates for MainStage, bringing new features and bug fixes. All release notes can be viewed here: https://support.apple.com/en-us/101568

We always recommend NOT having automatic updates enabled! https://www.macobserver.com/tips/quick-tip/macos-mojave-disable-all-automatic-updates/

Before you update MainStage, back up your current copy of the MainStage application and your existing concerts! If you run into any issues with the new version, you can revert back to the older one! (H/T https://support.apple.com/en-us/HT203004)

BACK UP MAINSTAGE

Backing up the MainStage app allows you to move your concerts to another Mac so you can continue to use these concerts in the earlier version of the app if there's an issue after updating.

Back up the MainStage app

Create a new folder in the Applications folder.
Name the folder with the name and version of the application (for example, “MainStage 3.6”). To check the version of MainStage you have, open the application, then choose About MainStage from the MainStage menu.
Select the MainStage application in the Applications folder, then choose File > Compress “MainStage.” It takes a few minutes to compress.
Move the resulting “MainStage.zip” file into the folder you created in step 1.
Move the folder containing the ZIP file to a backup drive.

Back up your MainStage concerts

To back up your MainStage concerts, you can use a system-wide backup solution like Time Machine or you can simply copy your concerts to a dedicated backup drive.

By default, your concert files are in the MainStage folder of your Music folder.