Yes, I had Cubemos installed and already followed the instructions from here (otherwise Nuitrack did not open at all): HELP with 'Entry Point Not Found' dynamic link library libcnn-hpe.dll when I open the activation_tool
Just to be sure I completly deinstalled Cubemos now and checked that the environment variables were also gone (thank god their uninstaller is just running fine), restarted my PC, opened the Unity project with the Nuitrack package and… same behaviour!! The camera starts 6 times during the editor loading, then when pressing play on the AllModuleScenes for the first time it tries to start again once (but disables itself immediatly). Error messages same as described above.
Did you have a chance to look into the EditorUnity log? Where did you get the hint from it could be related to some other tracking SDKs? What else do I need to uninstall in order to get Nuitrack providing some valuable feedback whats wrong? The Kinect SDK?