Ok this problem is a bit complex so i cant go into all details.
Lets imagine a vehicle is connected to script_structs points for the path and i started scripting from a flag trigger. Also 2 spawners are assigned to this vehicle. The needed vehicle(model)gsc, all assets & fx are included.So i hit the trigger in-game and the vehicle moves along the path...all speed settings or other functions on the script_struct points works fine but when the vehicle reached the point to delete i got a script error from the _vehicle_aianim.gsc.
I tried 2 ways to delete the vehicle:
-with a script_noteworthy on the last point and delete it via script
-the vehicle selfremove key/value
-I have a working hind in my map and there it works fine.

there 2 errors in the console
-type undefined is not a vector
-removed entity is not an entity

called from _vehicle_aianim.gsc
1413
org = animatemodel gettagorigin(tag);
942
animontag(model, tag, animation);
1435
guy waittillmatch(flag, "end");

So for me it looks like the threads want to play an animation on an actor/ai/model but this one is undefined...i tried several things but nothing fix this problem.
Thanks for any help.

My guess the problem is not with the deletion of the model, but with the fact it somehow wants to do animation on it (probably the actor linked to it) AFTER it has been deleted. Did you remove the spawned actors before removing the vehicle?

ok thanks for the help caretaker...i fixed it..the problem was the show_rigs() function i used in the main vehicle thread..i retraced this one to the _vehicle_aianim.gsc
without this function it works fine