- the V-Ray render plugin installed?
- Windows 7/8/10 as 32-Bit version?
if yes contact Chaosgroup for downloading and installing an appropriate V-Ray version.
btw, your profile is not correct:
- you are using SketchUp Make 2016 (not “SketchUp Free (web)”)
- “Operating System: Windows” doesn’t help very much, which Windows version exactly?
- “Graphics Card: Memori” is just plain wrong, run “Win+R > dxdiag > Display” for the correct data.