RH-45147. As a workaround you can set the advanced option RhinoCycles.SaveDebugImages to true. When you then use the view capture commands you’ll find at the end of the process in %TEMP% a file called RC_modal_renderer.png is created. This is the result of the Raytraced view capture. The blank renders you see are due to an OpenGL problem which is being investigated and fixed. The hacky workaround should give you the Raytraced results you are looking for. Remember to turn it off after a view capture, as it will also write out intermediate results and textures for a regular Raytraced view - it can be a slowing factor.