I'm finding more and more that it's best to keep a Prodigy job as simple as possible and let system builder do much of the work for you in terms of creating logic and user interface. I try not to add or delete more than a few buttons or extra steps in the macro. Add macros using feedback on receiver or amp outputs again to keep it simple. Another lesson I learned last week is that files should be exported, not just saved to prevent problems after updating system builder.