Where is solution your issue?
I just logged in to the Administrator account and set up Rift S. Then I copied the folders to my usual account
not updated if:
1. or add in Oculus folder two empty txt-files without extension(.txt - delete)
Manifest folder in Oculus base folder remain from current version(1.40)
In both cases, version 1.39 works without errors!
I use 1.40.1 and 1.39 versions