Mac Driver problem


I have been using Dobot Magician for a few weeks fine. This afternoon my computer crashed, and when it recovered I can no longer connect to the Robot from the Studio software. I noticed there is no longer a driver selected next to the “Connect” button, and I cannot connect to the robot, so I assume something happened to the driver when my machine crashed. I was using the SI Labs driver, so I just re-ran the install package, but that made no difference. Can someone please assist with getting the driver re-loaded?