I am having the same exact problem, only midi thru IS active. The light on the VST instrument (halion, prologue, etc) lights up when I play my keyboard but no sound comes out unless I use the mouse and pointer on the onscreen keyboard.
I am having the same exact problem, only midi thru IS active. The light on the VST instrument (halion, prologue, etc) lights up when I play my keyboard but no sound comes out unless I use the mouse and pointer on the onscreen keyboard.