Groove Agent SE with DAW Studio one

hello, does anyone know why i can see and use other cubase plugins and instruments in studio one but not groove agent se. yet he sees it clearly when they load the available plugins. ?

Go to Control Panel and Customize the installation for Groove Agent SE 5 (Windows). It may not have installed the “Public” VST Plug-in. By default, it only installs the private one that Steinberg applications know to look for. I think HALion Sonic SE 3 did this up until they separated it from the Cubase Installer (post-10.5).