I just got a Mac Mini M2 and needed to get OBS 29 (latest version) working with NDI but no matter what I did I kept getting the following error everytime I started OBS.
As part of troubleshooting why on my Mac Mini M2 NDI was not workign with OBS, I needed to completely uninstall OBS (application, plugins, configurations, etc) so that there was no traces of OBS on the system and then re-install OBS.