When I do some panning in my mix, I don't hear the result anymore.
Looking into Totalmix, the 'software playback' channel tells me it is correctly panned. My track is panned to the left, and in the software playback channel only the left channel is active, which is as expected.

But.. the 'hardware output' channel shows left and right active, so i hear my track dead center on my monitors. Never had this problem before, so probably I changed a setting being unaware of changing it. Does anyone know what happened?

The main channel 'mono' button is turned off btw.