求解SUAPP3.1.1在SketchUp2015中显示载入文件出错？

成功下了suapp3.1.1 但是打开su2015出现 载入文件出错 大神 求解 万分感谢

载入文件 suapp_loader.rb 时出错
Error: #<Encoding::UndefinedConversionError: "\xAF\xE4" from GBK to UTF-8>
C:/Program Files/SUAPP/suapp/suruby/gems/httpclient/lib/httpclient.rb:10:in `require'
C:/Program Files/SUAPP/suapp/suruby/gems/httpclient/lib/httpclient.rb:10:in `<top (required)>'
C:/Program Files/SUAPP/suapp/suapp_main.rb:262:in `require'
C:/Program Files/SUAPP/suapp/suapp_main.rb:262:in `<encoded>'
C:/Program Files/SUAPP/suapp/suapp_main.rb:7:in `RGLoader_load'
C:/Program Files/SUAPP/suapp/suapp_main.rb:7:in `<top (required)>'
C:/Users/Administrator.PC-20140211EJPP/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/suapp_loader.rb:5:in `require'
C:/Users/Administrator.PC-20140211EJPP/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/suapp_loader.rb:5:in `<top (required)>'