USB detection does not work on Mac OS X

SymbianUtils::SymbianDeviceManager::devices() and SymbianUtils::SymbianDeviceManager::instance()->getCodaDevice(port) will fail on Mac.
When I try to acquire the connected device, I get the following message: "Attempt to acquire device '/dev/tty.usbmodem2624' that does not exist." And when I try to get the list of connected devices, the returned list is always empty.

I made a dirty hack (see attachment) to SymbianDeviceManager::serialPorts() to verify the serial port problem. With the hack I managed to get the CodaDevice via SymbianDeviceManager and the devices() call also returns connected devices.