Good day, I have a 2010 Mac Pro that came with a flashed GTX 680 video card. When I first got the system I updated the latest video drivers to Nvidia Web Driver 346.03.15f02. Everything has been going great, no problems. Today that Apple security update 2016-001 came out, I installed and rebooted. Now whenever I log in the system pops up with Nvidia Driver Manager message that says the machine is now using OS X Default Graphics Driver because the Nvidia Web Driver, the same one I've been using for months, is not compatible with my current OS. When it comes to gaming I'm not noticing any differences, so I'm not sure how much cause for alarm there is. Did this security update screw something up with the GPU drivers? What about this security update would suddenly make these drivers incompatible? Anyone else experience a similar issue with their Mac and Nvidia card today?