FYI. I just got this from Support at Zen Studios
"
thank you for reporting this, we have just been made aware of this issue ourselves today.
We are looking into it, if there is a way for us to solve this, or contact Steam to make use of the really cool cabinets a lot of you have built
"
While we all try to find a way through this by adapting to the changes, I also suggest everyone contacting support@zenstudios.com and reporting this bug that makes pinball cabinet use of the Zen Studios product so difficult. I suggest being firm, but treating it as a bug that stops what we all bought and enjoy from working. I hope they can help to get it sorted out.