I was interested in getting the UAD-1 plug-ins so I contacted UA about running their card with Sonar 1.3XL and was told that they only "officially" support Sonar 3.0 and later.....it was suggested I might find a retailer with a liberal return policy and try their product on my set up.....not something I'm willing to try at this time....so, I was wondering if anyone else may be running this combination successfully?