Output driver is installed properly but is currently in use by another program"

I get this periodically when I quit, and re-load BIAB. My main MIDI out is a USB connected Ketron SD4. My options are to continue using the lame Wavetable synth, or to re-boot.


I have a task killer for when BIAB crashes and remains in memory, but when I get this message I need to re-boot to get my driver cleared. I am not sure what process is keeping it open. I sure wish BIAB would adopt the multi-driver model used by Real Band. I never have had issues with that.


Jan - 12 Core AMD Ryzen 9 3900X
32GB DDR4
Win 10 64-bit
Samsung m.2 SSD Boot drive,other SSD internal and USB drives.
MOTO 2
Ketron SD4,SD1000
Yamaha RX-v381amp
VB-Audio virtual cables