I recently upgraded to MC31. I backed up my Library, installed MC31, and restored my Library. That all went as I expected. I've noticed some strange things, though:
I configured Theater View to allow me to stream both Netflix and Amazon Prime through MC31. I noticed one weird thing and one problem:
Weird: I have a Zone Switch configured, which worked as expected when I used MC28. If <Media Type> is [Video] MC31 is supposed to route the signal through my HDMI output which is connected to an appropriate input on my pre-pro. If <Media Type> is [Audio], MC31 is supposed to route the signal to a USB output which is connected to another device. When streaming Netflix, the output was directed to my USB output; I expected it to go to the HDMI output.
Problem: about halfway through that same movie the sound stopped. I restarted my pre-pro (it sometimes gives me problems, but never before in the middle of a song/ movie), I checked the MC31 internal volume to be sure it didn't magically reset, I checked my Windows settings, I restarted MC31, I restarted computer. None of those steps restored the sound. Using my Client computer, I came back to the movie a couple of days later and it played just fine when I picked up where I left off.
Yesterday I was watching a ripped TV Episode on my Server computer using my main system. After a while the sound dropped out again. Again, all attempts at restoring sound were unsuccessful. Just for fun, I shut down MC31 and started MC28: the TV Episode played just fine.
Starting MC28 again made me notice another weird thing: all the {Key Word] tags for every episode in that particular Show had been reset. It wasn't a big deal to retag the episodes, but I can't imagine why the tags would be been changed when I restored an existing Library.
Thanks for integrating Netflix and Prime into MC. I hope these weird things I've noticed have been solved already...