The Full Library is installed, path is correct in the plugin. I have a valid license on an e-licenser (one of two in the system). I have rebooted, restarted DAW (Cubase 9.5). I just downloaded the plugin for the first time yesterday, so it is the latest version.
I run Windows 10 Pro (10.0.17763.168). i9-9900k@4.8Ghz, 64Gb RAM
I open the plugin, I select a preset and nothing loads. The memory counter at the bottom stays at zero. Playing on my keyboard, I see the piano keys move in the plugin, but no sound.