and check under "Order History" or "Registered Products" to find your original download link and serial number. Archived Installers:
This is the most common error when trying to install CS6 on newer macOS versions. This happens because the installer uses an older Apple certification that has expired.
Audio editing inside a VM can have latency. For professional work, dual-booting (using Boot Camp Assistant to install Mojave on a separate partition) is superior but requires rebooting your Mac.