Rendering stops early.

I had made several renders with Catalzyer today. Then I tried to do a render with Daz Studio Pro 4.11 (64)  and attempted a render. It was set at Max samples 5000. Render quality all at defaults. But it starts rendering and then ends ater 8 seconds. So I tried it in Daz 12 public build, and the same thing happens. What's going on?