My D810 was tethering perfectly with El Capitan, since the upgrade to Sierra is no longer connects.. Haven't seen this issue posted yet.. Any ideas on a fix would be greatly appreciated...
I fixed the issue. I completed a clean wipe/install of sierra in order to speed up my MB Pro late 2013. I neglectled to install Nikon transfer software. Installed this - all is well. FYI it's the only Nikon software installed.
Thanks ffor the quick response.
Thanks for the update.Glad to know you got it.