关于vray for su2015部分模型渲染不了的问题

自己新建一个模型可以渲染，但打开以前的模型就会出现下面错误。
 
载入文件 C::/ProgramData/ASGVIS/VfS/Ruby/R2P.rb 时出错Error: #<Encoding::CompatibilityError: incompatible character encodings: GBK and UTF-8>
C:/ProgramData/ASGVIS/VfS/Ruby/VfSObservers.rb:36:in `join'
C:/ProgramData/ASGVIS/VfS/Ruby/VfSObservers.rb:36:in `hack_ensure_texture_exists'
C:/ProgramData/ASGVIS/VfS/Ruby/R2P.rb:597:in `block in make_vray_mats_for_scene'
C:/ProgramData/ASGVIS/VfS/Ruby/R2P.rb:586:in `upto'
C:/ProgramData/ASGVIS/VfS/Ruby/R2P.rb:586:in `make_vray_mats_for_scene'
C:/ProgramData/ASGVIS/VfS/Ruby/VfSObservers.rb:1007:in `onOpenModel'
C:/ProgramData/ASGVIS/VfS/Ruby/R2P.rb:1816:in `<top (required)>'
C:/Program Files/SketchUp/SketchUp 2015/Tools/extensions.rb:197:in `require'
C:/Program Files/SketchUp/SketchUp 2015/Tools/extensions.rb:197:in `load'
C:/ProgramData/SketchUp/SketchUp 2015/SketchUp/Plugins/vfs.rb:70:in `register_extension'
C:/ProgramData/SketchUp/SketchUp 2015/SketchUp/Plugins/vfs.rb:70:in `registerExtension'
C:/ProgramData/SketchUp/SketchUp 2015/SketchUp/Plugins/vfs.rb:89:in `<top (required)>'