Even though Phase One has released the Capture One Pro 8.3.4, we and several of our customers have experienced connectivity issues with El Capitan. At this point, we still do not recommend upgrading to El Capitan on workflow critical machines. If you have already upgraded, you must be using Capture One Pro 8.3.4, and we highly recommend the use of a powered hub (especially if you must use a Thunderbolt … Read More →