Strangedogs
Old metalhead
I read where you simply rename a VST you want to use to one it allows and it'll work fine. If you put any plugin in a folder named VSTPlugins inside the Studio One main folder and give it the same name as one of the allowed plugins (e.g. Kore Player.dll) it will load and play. So if you load a host plugin like Kore (full) or Energy XT that way you can load any plugin. Should work with Amplitube, Guitar Rig (full), etc.