can anyone please help?

I am working in Sketcup make 2015 and downlaoded he TECLA import DWG plugin.
But keep getting a loading error:

Error Loading File TECLAsoftware_importDWG.rb
Error: #<NameError: uninitialized constant TECLAsoftware::ImportDWG::LH>
C:/Users/janinejordaan/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/TECLAsoftware_importDWG.rb:46:in <module:ImportDWG>' C:/Users/janinejordaan/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/TECLAsoftware_importDWG.rb:25:in module:TECLAsoftware'
C:/Users/janinejordaan/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/TECLAsoftware_importDWG.rb:5:in `<top (required)>'