Hi,
I have made a simple beach tank and trying to render it in Mantra (in stage). Often, the water doesn't show up at all, but this is how some of the render results have been looked like the past days. Sometimes, I have succeeded to render a single frame with the water, but then everything disappears. It's all gone in both render and viewport, even if I have caches and even if I open up the project on another computer. And then I have to start over. What am I missing? Is it just a memory problem?