Derelict SFML destructor crashes

[Nekroze]

I am trying to do some wrapping of the CSFML derelict bindings to 
classes however when i use the CSFML methods to destroy the 
objects it causes a crash.

I have made a post in the SFML>D forum because they have syntax 
highlighting for D so this kind of post looks nicer but the link 
is here:

http://en.sfml-dev.org/forums/index.php?topic=10005.0

There is a minimal code example there and a better explanation.

Can anyone help me with why this is happening?