Audio output suddenly gone

I’m working in WL7 (build 7.2.1, Mac OS 10.8.5) and suddenly for no apparent reason I’ve lost audio output. Re-booted computer, problem’s still there.

Master levels and VU meter are registering, but no output from the computer (I can still get audio from other DAWs and internet, so it seems to be a WaveLab thing).

Any suggestions?

Check your settings under ‘Audio Streaming’, or ‘VST Connections’ and see if your audio interface is set there.

OK all fine now - many thanks! (No idea how my audio settings changed themselves, though - very mysterious).