On the 20.1 patch, got an issue with GPU Progressive mode. CPU Prog works fine, as does GPU and CPU tiled.

In progressive render mode, the render images just get more and more transparent, even when saved out as pngs. This also affects the viewport render, and isn't limited to Metro, but to all renders.

It won't build for me:

I've just tried the test file @Craig Richaredson (craigar) linked to above and something is really wrong with importance equalisation (but we all knew that anyway).

@Lapineige for some reason, it didn't copy it to my build folder, but it still works for me? anyway, I've uploaded it again, copying the contents of my build to a copy of the 2.71 folder, which should include all the files but as it works for me, I've got no idea whether it's fixed everything.

(hopefully) built a version of R19 with CUDA (and GPU SSS and Volumetrics) compiled with VS2013/cmake. Doesn't have OSL or Player.