well according to this thread
it’s here :
https://extensions.sketchup.com/extension/20edfbcf-c61a-428f-a2f1-44aeb52e4bb4/composcene
If your email remain unanswered, you can also ping @indie3d
last time he’s been around was 4 days ago, si he’ll come round.
(also, no need to double post in his gallery, it won’t make it more likely to get an answer. 
)