No more output and sound stopped working with 2 projectors Connected, running Arena 6.1.1 MacB Pro 2015, High Sierra,

[kunstZ]

Clips don't appear in the output window (only monitor). Sound also stopped. Other applications still produce normal sound. Doesn't seem overload. 8 layers with advanced on 2 outputs (HDMI, VGA). What is going on?

[Zoltán]

Have you checked Composition master and Bypass? https://resolume.com/support/en/composition#properties

Also, why are you still on 6.1.1?
The latest v6 is 6.1.4 with many bug fixes.