Did you install SketchUp v2016 as an 'admin' ?
If NOT then you might have several issues...
I suggest you try uninstalling it and then reinstalling it - using 'as admin' in the context-menu when the exe-file is selected [rather than a simple double-click]...
💡 LightUp 7.1 | SketchUp's only real-time renderer that uses object-based rendering
Download Trial
R