There are a bunch of things in Keyshot 8 that I notice are not working right. One biggie is the mouse wheel no longer moves the camera in the scene, where it used to dolly the camera in and out. There are some other things in Alibre that seem to have changed, but the version has not, so they should not have done so. Smells like an OS issue. Current Win 10 Pro is build 18363. I do not know how old that is.