Thanks Artur!
Sorry about the email problems Lorenzo, we are not sure why you are not receiving those :( Sounds like all is ok as regards NANs with the latest daily build for you, but you have a new problem where a render shows normally in the PV, but the VFB is just showing black when opened. If that's correct, can I ask you to check which Multipass is being shown in the Corona VFB, does it say "Beauty" in the drop down list for that, or some other layer? (I once ran into an issue where the VFB would open and try to show a layer that it had been showing in a previous scene, but that layer didn't exist in this scene, which is why I ask). Thanks for your patience!
About the mail, no worry. I prefer to fix the corona bugs. :)
I render an image (5000px short side), press Shift+R (so it start in the C4D Picture Viewer), the Pc worked all night until he reached 10% of noise (to verify render time). The day after I looked the render and there was the image in the Picture Viewer but the Corona VFB was completely empty, like I never start a render. So I don't have any multipass.
Normally I started the render in PV because I use a plugin for the queue render that doesn't work if I use VFB.
Regards
Lorenzo
@beanzvision thanks