I discovered this and several other native plugins needed Kontact 7, not Kontact- with 7, access opened to all plugins
Please always state any relevant info such as platform , OS version and programs involved and their version !
From your profile I gather that you are on Mac : Apple M1 Max and Ventura 13.6.4 .
Does this work when using N.I. apps as standalone or is it only when using in a DAW , if then what DAW ?
A very much standard trouble-shooting advice in connection with Mac OS is to make sure that both all N.I. apps and DAW got full disk access ! : How to Enable Full Disk Access on macOS : https://support.native-instruments.com/hc/en-us/articles/4415601248657-How-to-Enable-Full-Disk-Access-on-macOS
Is this an older saved project. Without much info I'm taking a shot in the dark here, but sounds like perhaps it's an older project looking for a VST2 plugin that is now no longer supported by the latest NI software.
@Michael Stillwater Any update or feedback? Some folks offered their help here.
Thank you very much for reporting back and for sharing your solution ! 🙂 👍️