Getting openvdb.dll Warning with every render

[10DSpace]

I am not sure when this started, but I am getting the following warning with every Arnold Production Render: 

I am using Max 2022.3, MaxToA version 5.3.06. Arnold version 7.1.2.0 which as far as I know is the latest version of Arnold.  Is there an explanation and a fix for this warning?

[Stephen.Blair · Accepted solution]

You can safely ignore that warning.

3ds Max 2022 doesn't support volumes in viewport. You'd have to upgrade to 3ds Max 2023

OpenVDB.dll was added to the MAXtoA distribution for volumes in viewport.

That OpenVDB.dll is not used at all in 3ds Max 2022.
But Arnold itself checks the DLL (all DLLs in the same folder as Arnold) at Arnold startup.
So...there's that warning.

[10DSpace]

@Stephen.Blair 

Thanks for the prompt and clear explanation.  I will ignore the warning with confidence now.  (I was ignoring it before with ignorance. 😁)