Hookshot bug ?

[Bull Bizard]

I'm puting several dmap in my game to make islands which can be reached by using the raft in the overworld.
When Link use the raft it goes at the border of the screen then teleport with a side warp (using entrance exit) in the specific dmap.

I've tried this and it's working. :)

But in one of these there is a bug : When Link touch the border of the screen the game freeze and ZC tells me an error occured and close ! :mad:

I've trie many things and it seems to be due to the hookshot !

When I got it the bug is here and none if I don't have it.
Very strange, no ? :scared:
(I've tried with the small and long one)

There is an other bug after that.
I've put the start of my game after this bug to see the island and when I walk on it (there is 4 screens) I can't go to the right screen !
On the top, bottom, I can, but not in the right !!
The bug is there only if I go the Hookshot... Too !

Is the hookshot the real problem ?

I've tried to change the level of my Dmap : first 0 (like the real overworld) and then 10 (like all my others dmap except triforces dongeons)...

If you want some screen to illustrate ask me.
Please help !