I'm a consultant and having serious issues when connecting my MacBook Retina to LCD projectors. Basically I'm unable to advance my powerpoint slides with either a remote presentation clicker or by hitting the return key on my computer. The only way I can move from one slide to the next is by pointing to the arrow below the slide (when on presenter view) and clicking there. I really need help fixing this problem since I can't present effectively when tethered to the laptop.