Error: #<NoMethodError: undefined method `refreshMaterials' for #<MH_KeepingMyHandIn::MaterialMaintenance:0x1383e920>>
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/Material_Maintenance/Material_Maintenance.rb:106:in `send'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/Material_Maintenance/Material_Maintenance.rb:106:in `fromUIHandler'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/Material_Maintenance/Material_Maintenance.rb:66:in `initialise'