Be aware, that the system requirements of SU version 8 (rel. 09/2010) do not cover recent operating systems as Windows 8.x/10 or macOS 10.12:
• SketchUp Pro 8-EN f. Windows XP/Vista/7
• SketchUp Pro 8-EN f. Mac OS X v10.5/6/7/8
Be aware, that the system requirements of SU version 8 (rel. 09/2010) do not cover recent operating systems as Windows 8.x/10 or macOS 10.12:
• SketchUp Pro 8-EN f. Windows XP/Vista/7
• SketchUp Pro 8-EN f. Mac OS X v10.5/6/7/8