I've recently upgraded a project from v.14 and am having problems with viewing the project in 3D. I can select the individual building materials, yet when I deselect them all I see is a white background. Renovation filters are not being used and I'm pretty puzzled as to what is causing this problem. I have been using 3dConnexion Spacenavigator and thought that might be what is causing the problem but have unplugged it and restarted the computer, but still am having the same problems.
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