Thank you. None of those posts were my exact issue. I have made a temporary fix by disabling the Blackmagic software AND hardware in Device Manager when I want to use Vegas and choosing between the motherboard audio driver for Vegas or the Blackmagic ASIO driver for the capture software. I built a simple switch to send the appropriate audio to my mixer. This now works fine because Vegas cannot see the disabled Blackmagic ASIO driver or the hardware. It's just a pain to have to switch between two systems depending on whether I am capturing audio/video or editing. There must be a way to do this without such a cumbersome process. If nobody has a solution on this forum I will contact Magix tech support and see what they have to say.

Cheers, DonW