We're having this same issue and it is holding us up from submitting our iOS 8 update. We need to be running OS X 10.10 to be able to submit app preview videos for iOS 8.
Seriously Adobe you need to get your act together. You can't expect us to continue paying you each month when you wait a month to fix broken software, then not even push out an emergency update once you have a fix in place. And this isn't some minor bug either; it completely prevents your users from publishing! If you wonder why people keep saying that Flash is dead and Adobe doesn't care, it's because you do this to us time and time again.
Please....release an emergency update so we can publish our apps again!!!! We really want to love Flash and Adobe again, but you need to help us out here.
