No audio Scaler 3 Mac Standalone but Scaler 3 plugins work

Mac mini M4 Pro
MacOS Sequoia 15.4
Scaler 3 v1.0.3
SoundSource 5.8.2
– Audio Engine: ARK Plugin (12.2.2)
PreSonus AudioBox iOne

Was having problems for a while with Scaler 3 Standalone not outputting audio for several minutes, then suddenly working. Now, there’s no audio output at all from the Standalone, but the various Scaler 3 plugin versions all work in Bitiwg. It could be something to do with SoundSource – I’ll also contact them.

FIXED Now audio working in Standalone after rebuilding macOS Launch Services Database. Go figure.