KK will not load anything, regardless if it is Native Instrument or a third party NKS compatible plugin. It does not work in stand alone mode or as a plugin. See attached screenshot.
KK 3.5.0 (most recent update)
Mac M2 Pro
MacOS 15.5
Kontrol S61 MK3
Logic Pro 11.2
Edit: Only KK appears to. be affected. Kontakt seems to be working find in stand alone and in plugin modes.