ok, I think I smell some mistake here.
You can also do the collection with the destroyActor function, but!
you tell the
coin:
collision -> any side of player -> destroy actor: event actor.
I promise you, this will work.
I think what you did was:
player -> collision -> any side of coin -> destroy actor: coin.
the difference is:
coin will destroy the whole group of coins, event actor means: here I am, just destroy me. PLING!
the re-appearing thing is quite right.
gotta good point there =D