Hi Robert,
I searched for executing with root-permissions, because an app can't get access to read USB-devices.
the log of the app reads as:

LIBUSB: warning [darwin_detach_kernel_driver] USB device capture requires either an entitlement (com.apple.vm.device-access) or root privilege
Error: 2] failed to claim USB interface: -3 LIBUSB_ERROR_ACCESS (Access denied (insufficient permissions))

[14:08:27.487 Camera Error: 2] failed to open transport: 1.1.2-1.1-054c.0ccc

so I thought executing with your method might help..
but it doesn't

Any tipps would be greatly appreciated

Markus