Guys the same problem as here:
We can't playback audio or video in the source window, timeline or from the imported clips. When we click on play button or hit 'space' the play icon just changes to square and that is it. Please we need some urgent fix
This issue occured on my Retina 15, 16GB RAM with Creative Cloud.
Hi guys, if anyone else experiences similar problems the only solution seems to be a time machine backup from the day you know it worked. I have been on a phone/connect with Adobe support for over 3 hours and it was a very specific problem that we couldn't fix. Then I've tried the time machine and it works, but still I've needed to restore current version of my system. I will try to keep my case updated here. cheers