SOLVED?? Separate Render Channels = Error writing output to file

[digitalx3d]

So I was just hacking through this issue. Read through the forum and found a number of other people experiencing something similar. I thought I tried everything to fix this with no solution, but think I may have just come up with something. Thought it was worth sharing.

I only had Vray Denoiser in my Render Elements. I deleted the element. Then added it back in. I noticed it filled in the file name and path in the Selected Element and Parameters output field. It apparently snagged this info from the standard 3dsMax render output (save as...) field. I cleared this by closing the Render Dialog and then typing rendoutputfilename = "" into the listener. I again deleted my render element and then added it back in. This time the output field in the Selected Element and Parameters area was blank. After that, no more error!! The files saved out as expected.

Hope this helps someone!!

[digitalx3d]

OK... there is a little bit more to this.

I don't want to discount what I said earlier, as it MAY still be useful. However, it seems that the DeNoiser option to save the denoised result into the RGB channel IN COMBINATION WITH using Separate Render Channels perhaps causes a conflict. After switching back to saving the denoised result into it's own channel, the files were all written successfully.

[svetlozar.draganov]

I am not aware of that issue, is it reported somewhere on the forums?
Would you please let me know how I could replicate it here?

[andybot_cg]

I was having conflicts with the "all channels" denoiser option too, I switched back to RGB only and that's working OK. I forget now what wasn't working, but I can go back to that file and report back if you need.