I am hoping for a solution soon as well, but the only time I get that message is when I go to the stations view of Studio, and that is rare. While Linux and OS X are capable and I have used all, and as much as I hate Windows for most things, it is the best platform for digital signage. All OS's have their strengths and weaknesses for different applications. Also, Apple has been changing its focus, which is the cause for it to not be a totally reliable OS for DS anymore, and I do not see a change in the foreseeable future. For now, if you want the best DS experience, I would suggest using a windows based player for all future projects.