I'm not certain this is just a v9 issue or not, since I haven't used the Take system in a bit.
If the Corona preferences are set to always use the VFB, the command Render Marked Takes doesn't seem to work. It seems to be rendering somewhere because if I hit render again, it asks if I want to abort the current render. Not shows up on my drive however. When I switched the preferences back to C4D's Picture Viewer, everything worked as expected.
Also when rendering multiple takes, I keep getting the window indicating I am missing all or most of my textures, but nothing is actually missing. When I continue with the job, rendering is as expected with zero missing textures. Rendering the same scene with a simple Render to Picture Viewer gives me no warning and also renders as expected.
Not sure what's going on there.