Importing composite wall constrcution files

I tried to import composite wall constructions file from EnergyPlus 8.1 in my OpenStudio SketchUp model but it shows the following error:

Failed to load file at C:/EnergyPlusV8-1-0/DataSets/CompositeWallConstructions.idf.

Error: Cannot load Model for path'C:/EnergyPlusV8-1-0/DataSets/CompositeWallConstructions.idf'. Extension must be 'osm'. For 'osc's use loadComponent.

Can anyone kindly explain this?

If you are using the OpenStudio SketchUp Plugin and you want to import constructions or schedules into your current model go to the "Import" menu under "Plugins/OpenStudio" and choose the appropriate options. In your case "Import EnergyPlus IDF Constructions". You can also import from an OSM.

As a note, if you are in the stand alone OpenStudio application you can also load external objects if your dataset is an OSM by loading it as a library using the file menu. It will replace your current library resources (note: this doesn't affect the HVAC library).