No file stream error - rendering very large image

After 20 hours rendering a really large image (I followed the instructions from Vray documents for rendering very large images) I gert this error at render end. (please see image attached)
No .vrimg is saved and I havent found a solution yet.
Does anyone experienced somehing similar?

Are you rendering to a network drive directly, or to a local drive?

Best regards,
Vlado

Have the same error, but rendering 4000x2000 image… Rendering into VRImg format, as when I’m using VFB - the system just completely freezes. Windows 10x64, 3dsmax 2016, VRay 3.60.01, 16GB Ram.
I tried to save in to EXR format - no error, but no file as well.
Updated to 3.60.03 - same error, same missing file with Exr.

SOLVED :
Turned off denoiser element. I think it’s a good idea to check whether the image is in the memory buffer to denoise or it is not.

Ok, thanks - will look into it.

Best regards,
Vlado