Scenarist BD v9.0.4 - Atmos encode issues

[TahoeP]

Hello all,
This is my first attempt at adding a Dolby Atmos stream to a Blu-ray disc.
I have generated a Dolby Atmos - Pink Noise test file through the Dolby Renderer. The folder with the encode includes:
1. PN.atmos
2. PN.atmos.audio
3. PN.atmos.metadata
4. PN.mlp
5. PN.mlp.log.html
6. PN.mlp.mll

I opened my MUI Generator, drag & dropped the PN.mlp file onto the ES File and the ES Type did not change, just says unknown. I manually changed the ES Type to Dolby Lossless then hit Create File. A window appears that says Input MLP File.
Dolby lossless Core file Name (1/1) "PN.mlp" (greyed out). Default MLP File Name (1/1) "PN.mlp" (also greyed out). The input MLP FILE : PN.mlp. press Execute and I get an error (noted below). I have tried every Dolby option in the pull-down menu and nothing works. I continuesly receive an error message:

Unknown stream. offset=0
(File path)

I have also tried every option with the checkbox ✅️ unchecked and checked with no success.

Then I have tried changing the ES File to every file in the atmos folder, nothing.

Any thoughts would be greatly appreciated!!!

Thank you for your time.
Regards!