here is the link to the capx file.
Ok you cant collide a q3d model with a 2d sprite that triggers that popup function error.
So currently - ( q3d model on collison with sprite - destroy sprite ) - wont work :> one is 2d and one 3d or not designed to function that way is the simple answer.
Change it to (q3d model - on collison with q3d mode2 destroy 3d model2)
Create another q3d model object and change the sprite to q3d model2 and destroy the q3d model2
There are some things you can't do that is the 2d to 3d collisions, but you could still destroy a sprite after the collision but the collison needs to be between both 3d models on same layer.
but off the top of my head you could hide the 3d model2 no texture and turn off debug helpers and then place a q3d sprite instead above the 3d model then you get the same effect from 2d camera view.
first put the q3d sprite on top the qdmodel2
( q3d model on collison with q3d model2 - destroy q3dsprite destroy q3d model2 )
I hope that helps.