I have much the same issue. INstalled 2017, found that didnt work, so un-installed everything. INstalled 2016, then openstudio 1.13. And when starting sketch-up I have a bunch of errors . I also have installed both apps to the same folder.

Errors below:

Error Loading File C:/ProgramData/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio/Startup.rb Error: # D:/CymapDev/IFC/OpenStudio/OpenStudio 1.13.0/Ruby/openstudio.rb:153:in <top (required)>' D:/CymapDev/IFC/OpenStudio/OpenStudio 1.13.0/sketchup/Tools/RubyStdLib/rubygems/core_ext/kernel_require.rb:45:inrequire' D:/CymapDev/IFC/OpenStudio/OpenStudio 1.13.0/sketchup/Tools/RubyStdLib/rubygems/core_ext/kernel_require.rb:45:in require' C:/ProgramData/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio/OpenStudio-config:2:inload' C:/ProgramData/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio/Startup.rb:33:inrequire' D:/CymapDev/IFC/OpenStudio/OpenStudio 1.13.0/sketchup/Tools/extensions.rb:197:inload' C:/ProgramData/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio.rb:176:in register_extension' C:/ProgramData/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio.rb:176:in