I have been using Teamviewer to connect to a remote Windows machine from my Mac. I had to replace my Mac and installed a new version of Teamviewer on the new Mac. When I connected to the Windows machine, selecting the show black screen and disable remote input, was only letting me check both if I checked disable remote input, unchecked disable remote input, checked show black screen, then checked disable remote input, or something wierd like that. I don't recall the exact order, just noted that it was unusual. After that I would get the message saying that the driver needed to be installed to show black screen and I selected install (or whatever option it has to do it). The window would go away like it normally does when I have done this in the past. The next time I connected though, and evertime since then it had me go through it again, so I wasn't sure if any of them had actually installed the driver. Even though if the driver is on the Windows remote end it should already be on their as I have been connecting to it and enableing the black screen without issue for months from my pervious Mac. I thought that perhaps the new install on the Mac was a more recent version than on the Windows, so I checked for an update on the Windows end and there was one available. I don't recall the version number that it listed. I ran the update, which restarted on the program on the Windows end and now I cannot reconnect to the Windows machine and get a message saying that the Windows machine is using a more recent version and that I need to update here on the Mac. The problem is that the version on the Mac is saying it is on the newest version (14.7.1965).