Grid Checkbox Not Appear

Hi. Im loading a grid and the checkbox cell it doesnt appear.
Here is a example of the xml.
Where it can be the problem?
Thanks!!!

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Id de usuario Alias de acceso Nombre del usuario Apellido del usuario Mail del usuario Habilitado Password del usuario Usuarios 1 Pedro Pedro xxxxx xxx@gmail.com 1 356a192b7913b04c54574d18c28d46e6395428ab 2 Hugo Hugo YYYYY yyyy@gmail.com 1 3477446391442747ea823e8a71e5711f61d724b5

No one???

As the checkbox in the dhtmlxgrid is an image, please, make sure that the image path is defined correctly:
mygrid.setImagePath("…/codebase/imgs/");

If issue still occurs fro you - please, provide with a complete demo, where the issue can be reconstructed.

Thanks Sematik. That was the problem.
I move the imgs folder to other folder and the icon of the checkbox was not there.
Tanks again!