sketchup plugin not loaded

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I just installed OS 2.0.5. When I opened SketchUp I checked the box to install the plugin and got the following error messages:

Error Loading File openstudio.rb Error: #<loaderror: cannot="" load="" such="" file="" --="" c:="" users="" david="" appdata="" roaming="" sketchup="" sketchup="" 2016="" sketchup="" plugins="" openstudio.so=""> C:/Users/David/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/openstudio.rb:55:in require_relative' C:/Users/David/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/openstudio.rb:55:in<top (required)&gt;'="" error="" loading="" file="" openstudio.rb="" error:="" #<loaderror:="" cannot="" load="" such="" file="" --="" c:="" users="" david="" appdata="" roaming="" sketchup="" sketchup="" 2016="" sketchup="" plugins="" openstudio.so=""> C:/Users/David/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio.rb:55:in `require_relative'

C:/Users/David/AppData/Roaming/SketchUp/SketchUp 2016/SketchUp/Plugins/OpenStudio.rb:55:in `<top (required)&gt;'<="" h2="">

I tried manually copying openstudio.so to my plugins folder but got the same or similar messages. I had no problems with the earlier version I had installed (1.14.?). OpenStudio is installed in my Program Files folder in a folder I created (the default is to install it in the top C drive director). Any idea how to fix this?- Thanks!