v7.2.10 - no sound from laptop speakers

Audio configuration settings: ddj flx4
Output audio from the computer built-in speakers and ddj - YES, checked - but sound coming only from the ddj headphones, not from computer built in speakers - please help. Only happened after v 7.2.10 was installed. tries restarting, changing all audio settings. Double checked audio midi setup on my mac - all is normal.