No LoFi Sounds Load in HALion 6 or HALionSonic Everything Else Works Fine

September 2022 … same as you. Installed, reinstalled, did everything correct. When I try to load a sound into the left hand column it flashes a red box. No output sound for this either. All my other VST3 plugins working, so it’s not an issue with sound in general. I have both activated in my elicenser, doesn’t matter.