Japp så här skrev han till mig
1. Open System Preferences. Click the Network icon. For “show:”, select ‘Network Port Configuration’. Uncheck AirPort if available. Click Apply Now.
2. Try playback and recording again.
3. Go back to the applications folder. Open the utilities folder. Open the Disk Utility. Select the hard drive volume to the left. Click repair disk permissions. Afterwards restart your computer. Try to change the device settings to project again.
4. If this doesn’t work, restart your computer, before the computer can boot up hold down “control” “apple” “p” and “r” and wait for 3 long beeps. After this release the keys and let your computer boot up.