Could Not Parse 3D LUT because of a Problem with Adobe Color Engine

Holo friends , 

I solved this.  That's all there is to do.  You  Change the extension of the file of cube extension to .3DL extension.  Success is certain.. no requirement any updates 

Ok an update. The user tried to open a new project with a different frame and the same error above appeared.

It is a 16 bit LUT. It works when applied to other scenes. Just not the one we need it for. The LUT settings:

It is a 16 bit LUT. When they load the LUT with a different scene it works fine. Here are some more settings of the LUT:

Hi, just to refine the search for a solution, are they on a RGB document, is it in 8 or 16 bits, in Ps 23.5.1? 

Can they open the default .CUBE luts? In which app was that LUT created? 

This is on a Windows 10 system with Adobe Photoshop 2021. The LUT opens in Nuke and DaVinci Resolve just fine. It is only Photoshop where it has the issue.