Hi John, The ear sounds painful! I hope you are recuperating well. Thanks for the workflow. I have got it to work, with SU loading a script automatically (which defines a function to set the current model behavior as I want it) and I call that function in console. It runs slowly compared to the all-Ruby solution - but at least it processes without crash. So I can send lots of files and leave it to run over lunch, or night! Many thanks again, Keith

It would be easiest to make the render at the proportions of your SketchUp drawing view size. Then you can make your image export from SU and overlay them perfectly. Crop to the desired proportions in your image editor.