I actually have more problems with APB and SSDC version 5 than I did with PBPro SH and version 4. It seems like SSDC has taken a step backwards in overall stableness with the APB. My impression is that the APB is different enough that Andy is somewhat starting over. I don't have any reason to think that it won't get worked out eventually and I won't be switching software any time soon. If I had to do it over agian though I would have kept my PBPro SH in working order until things get worked out with APB software. I've already gutted my PBPro into a pit lane sensor so there's no going back for me now.