SoundCheck 19 was developed and validated on macOS Catalina. It can be installed and ran on macOS Big Sur by making the following adjustments:
Before installing SoundCheck on macOS Big Sur, it is recommended to disable System Integrity Protection to make sure all components are fully installed. To do so, follow the instructions in the Apple article below:
SIP will need to remain disabled to run SoundCheck.
After installation, it is also required to run the following two commands in terminal to allow the operating system load and execute some specific extensions:
defaults write com.company.MyApplication NSGraphicsContextAllowOverRestore -bool YES
defaults write com.company.MyApplication NSViewAllowsRootLayerBacking -bool NO