You made a neverending 'on create' loop.
When you have a bunch of objects in the layout, they count as 'just created' when running that layout.
So, the 'on create' events you made, they create a new object for each object in the layout, and then kicks in again on those newly created ones. Result: a neverending loop.
Solution: Destroy them in the 'on start of layout'
And use containers to pair sprites with theire helper sprites.