Well beyond three Q&A questions in Issue #4, which are only just clarify the existing rules by giving more detailed explainations, the only real piece of errata I've seen (mindful I don't have S&P #3) was for Interceptors. And those can also be found on Mongoose's site here as well. So, barring S&P #3 there has been no errata one could not get for free off the site. Unless of course others know of such material published in the other B5 products.
Don't worry, Prophetsteve. To the best of my knowledge, the errata we are putting together will be free for all, hosted right here on our server. You won't have to pay a dime (well, maybe a virtual one for the internet time) to it. That acceptable?