I have been successfully using Aria/GPO with Overture 4.15 on a MacBook Pro running Snow Leopard for about a month after switching from Kontakt. Everything was great. Suddenly my notation program now causes Aria to stick on a single note and/or distort. I reinstalled Aria and the latest Overture patch, rechecked the Midi setup in the Mac, and rebooted several times. Same result with multiple files. Aria works OK by itself, and Overture works OK with Quicktime. Together they are unusable. Anyone have a cure? Thanks, Wayne