Unity Build Problem with sprite's

Hi everybody,

I am currently having a serious problem with builds of unity, my game works fine in the editor, but when exporting the game to windows problems begin.

Some sprites generated by using the packed sprite does not consider, for example I have a GameObject that has 2 children and they too are sprites and to be complete this GameObject parent both children must continue to show, but it is not, to be completely removes the first element of my arrangement and allows a dragged me to another element on and off.

I have changed computer and have returned to the build, I moved all the assets folder and the problem continues.

In the unity editor my game works properly, the problem appears to generate the build.
Any ideas or suggestions

Greetings.

Another important thing, when I create a build the dates of the exe file is from July 2011.

I dont know if this date problems affects the funcionality.