I have a Windows version of Cubase Pro 14 which included a basic version of Spectral Layers.
After using the download manager to install the full Spectral Layers 12, access to Spectral Layers has now greyed out from the Audio/Extensions drop down and cannot be accessed from within Cubase. It does however run as a stand alone product.
I think it is something to do with licensing but can not resolve it. I have downloaded and installed a number of times without success.
Any ideas please?