1. Open Studio One. 2. Go Studio One > Options > Locations > VST plug-ins. 3. Add a Fake empty VST plugin folder called FakeVSTPluginsFolder. 4. Remove your curent VST plugin folder(s) and leave only the FakeVSTPluginsFolder. 5. Click on Reset Blacklist. 6. Check Scan at start-up 7. Click on Apply. 8. Click on OK. 9. Close Studio One. 10. Open Studio One. 11. Go Studio One > Options > Locations > VST plug-ins. 12. Add your working VST plugins folder(s). 13. Remove the FakeVSTPluginFolder created. 14. Click on Reset Blacklist. 15. Click on Apply. 16. Click on OK.
NOTE: Seems Studio One use VST ID instead of .DLL or .VST names. If you are running multiple alias of Nebula you should use different VST IDs by changing the Magic Number tag in each .XML MAST page.