Laszlo,
Please post your Registry key modification and I will give it a try.
Spot, I went through the Vegas Prefences and could not find a box to uncheck that would deselect ASIO drivers. Actually, there is no option to choose ASIO either as I don’t have a Creative Labs card in this computer. Vegas 7e did not trigger this error, it started after I upgraded to 8.
thanks,
Jeff