Audition 2020 VST support is busted
Izotope plugins cause 2020 to crash.
MeldaProducitons plugins ui don't appear.
We're investigating, but this appears related to changes Apple introduced in MacOS 10.14 and how applications and plugin compatibility is affected by changes introduced into Xcode. It looks like older plugins which were compiled for and relied upon older MacOS graphics libraries may crash - not just in Audition but any DAW which was compiled with the MacOS 10.14 SDK or higher.
We've confirmed the plugins scan correctly, and if part of an existing session, import correctly, but crash when the UI is displayed. The crash occurs within MacOS frameworks, not Audition, but may crash Audition as the parent process. We'll reach out to plug-in providers and Apple, but it appears more recent versions of these plug-ins are fully compatible with MacOS 10.14 and higher, and do not introduce stability issues in Audition or other DAWs tested.