Hi,
Cubase and Nuendo only accepts ARA-Plug-Ins when they are located in
Win : C:\Program Files\Common Files\ARA
Mac : /Library/Audio/Plug-Ins/ARA
If you need official support inside the VST3-folder, please give us access to your plug-in. We’ll do some testing and if it’s fine, we’ll add your plugin to Cubase and Nuendo.
See you,
Michael.