Reply To: Dynamic Paint Not Rendering

…Actually, let me come back on that; it’s not the Motion Blur that’s causing it. Here’s when I re-opened your .blend, without changing anything, just pressed F12:

So my guess now is, that it somehow has to do with Caching…First time I opened your file, I didn’t have anything cached, but now I have a blendcache_Rain sitting next to the .blend…