Hi Emmanuel,

Thank you so much for the quick response!
I solved it and got it working thanks to your Tipps, yet I still have no clue what the Problem was..
In the end it now works with a filesize of 28MB, I only had to leave out one single model (a carpet - nothing special). I identified it by deleting several groups after each other and then trial and error…
Anyway, really happy that it works now and thanks again - also for this amazing plug-in!
Kindly Matthias