Unexplainable indetermination

Hello,

i've got this undetermination 'X' and i don't understand its origin, since the function is set to Zero, their roots are zero everywhere, but this signal remains 'X' anyone can help

Code:

AntImagen2 <= Resultattmp(CONV_INTEGER(Pixelactual));

As you can see down the origin its 0 at the center reset, the signal is inicialised to 0 as the others, my code so there is no sense of this X since the code is the same as this* code in this** photo:

* AntImagen1 <= Resultattmp(CONV_INTEGER(Pixelactual)+9); -

AntImagen2 <= Resultattmp(CONV_INTEGER(Pixelactual)); --

AntImagen3 <= Resultattmp(CONV_INTEGER(Pixelactual)+11); -

**

http://i47.tinypic.com/22yzjk.jpg

Pixelactual is set to 12 during all the reset state so pixelactual(12) which is zero...

Resultatmp contents:

http://i50.tinypic.com/29cl5qt.jpg

Can anyone help?

Thanx