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Hi,

Sebastian Rohde wrote:
> When I comment this out everything works great with the fallback cast.

Maybe. Maybe not. Do you use Direct3D/DirectX? If yes, then you
are just shadowing the problem here and it will come back to
haunt you elsewhere. Read:

  http://lua-users.org/lists/lua-l/2005-10/msg00254.html

It should be noted that turning on D3DCREATE_FPU_PRESERVE
reportedly has no detectable performance impact on modern CPUs.

Bye,
     Mike