I haven’t gotten this to quite work yet (not going into VR even though it thinks it should be per the log file..) more testing to be done…
However, regarding the install script. It works fine (Win11 at least) so long as the key tree exists. On my machine, I did not have any keys in the tree below “khronos/openxr/1/”… However, after creating the “ApiLayer/Implicit” structure, the install/uninstall scripts appear to work.
Not sure if there is a way to force in the key creation in the powershell scripts.