For those who have been posting about err 21 problems w/ Sonar and UAD-1, try replacing ALL of the UAD instances with Directx. So far, this is working on my system. I always used VST because that seeems to be the general concesus, but up till this point it looks like directx might be the way to go for me. This of course, rules out UAD 4.1.
I'll keep you posted to see, if indeed, in the long run this solves the err 21 problem.
I'll keep you posted to see, if indeed, in the long run this solves the err 21 problem.