3D animation now works (sort of) in SeeYou. When invoking the 3D mode the screen might initially be jumbled but when I start the animation it begins working normally. The problem seems to be that the animation is unable to be instantly interrupted for zooming or panning the camera direction. The zoom is incredibly sensitive as well. Just a tiny movement zooms in or out to the maximum. Once zoomed the animation continues for many minutes with no response to any more zooming or mouse clicks. BUT, these actions are stored in the queue and are eventually faithfully executed in order when the program finally recognizes them. Not the most useful but at least the 3D animation has some functionality now. I have tested the latest few version of SeeYou on Crossover versions 12, 13, and 14 on a 2011 MacBook Air, 2013 MacPro and 2008 MacPro in Mavericks and Yosemite.
