Tethering with EOS 5D mk III on Mac OSX 10.11 not working

The tethered shooting in Capture One (8.3.1.16) doesn't work. The app finds the camera, which can even be remote controlled from the app, it even shows the Live View from camera. But when I trigger the shutter button (in app or on camera), camera takes a picture and then nothing happens. It's not saved nor on the macbook neither on camera flash card. And yeah, I triple-checked the location where files will be stored and tried to change it (inside/outside catalog). Also, Capture One has permission "to control my computer" (Security/Privacy prefs pane, checkbox marked).

The camera is Canon EOS 5d Mark III, firmware 1.2.3 and 1.3.3.
My other camera, Sony ILCE-7 mk II works perfectly fine, all the images are acquired and added to catalog.

Any bright ideas how to make Capture One get images from Canon camera without downgrading the OS to Yosemite?