请问怎么解决Vray3.4安装后提示载入文件 vfs.rb 时出错？

载入文件 vfs.rb 时出错
Error: D:/SU2017/Tools/RubyStdLib/rubygems/core_ext/kernel_require.rb:54:in `require'
D:/SU2017/Tools/RubyStdLib/rubygems/core_ext/kernel_require.rb:54:in `require'
C:/ProgramData/SketchUp/SketchUp 2017/SketchUp/Plugins/vfs.rb:19:in `<module:VRay>'
C:/ProgramData/SketchUp/SketchUp 2017/SketchUp/Plugins/vfs.rb:4:in `<top (required)>'