Hi conitec,

I have several models which make the engine crash without any message or acklog note when cloning them using ent_clone.

I just put them in any project with the simple action:

action my_object() {
wait(2);
ent_clone(my);
}

This only happens with certain models; however I haven't found any similarity between them or any difference towards working models yet. I'm using A7.10.
If needed I can send a few of the models to the support.

Yes, please send such a model. We'll check.

Ok I've sent some models.

I've recognized something else by now:
When I create a new model with a single quad (4vertices two faces) this simple model works right with ent_clone. However when I add two faces to the existing 4 vertices with build face, that the model is also visible from the opposite direction, it crashes with ent_clone.
So a two faces quad that has only a surface on one side works while a four faces quad with a surface on both sides crashes.

I confirm this bug. It's related to duplicate vertices, and will be fixed in the next update.