Are you on Windows? You could try registering the SketchupViewer.dll- LO probably can't find it. Open a DOS box, and cd to here- C:\Program Files\Google\Google SketchUp 6\LayOut or where your layout.exe is installed. Then do- regsvr32 SketchUpViewer.dll This should popup a dialog saying succeeded. If it doesn't say succeeded, then reinstalling is best.