I have three pc's running W8 pro 64 which I have just finished updating to 8.1. Two had Google Earth on them before the update which runs as before. The third didn't have GE and when I loaded it the globe looks like an old 3D picture with red/blue colours displaced. The rest of GE is ok including the Tour guide. Panaramio's are difficult to open because the icons are double, but when I managed to open one, the photo was ok but the surround was doubled. I am a bit reluctant to uninstall and reload one of the good ones in case it also fails. I have measured the displacement as 11mm in 480mm on a 27 inch monitor. I have the correct graphics drivers, Nvidia have 8.1 drivers. I also tried an older version of GE with the same results. DirectX and Open GL also tried.