problem with the portrait while creating a object

[ilore]

I am creating objects for the workshop (using blender 2.69) and I have a problem with the portrait every time I play a “local server” game to see how the object looks ingame:

When I play, everything works fine: the textures, the animations, the portrait,… BUT when the character appears after the death, the objects in the portrait appear duplicated: one of them works fine and the other appears static.

The strangest is that after this problem, if I select other element in the game and I select again the character, the problem with the portrait disappears and it works fine again.

You can see that in this picture:

http://i969.photobucket.com/albums/ae173/jtnilore/Sintiacutetulo45_zps3d475755.jpg

-the picture 1 is before the death of the character

-The picture 2 Is when the character appears immediately after the death.

-the picture 3 is after the death, when I select other ingame object and I select again the character. As you can see, the problem with the portrait resolves by itself.

I tried to upload in .fbx and .smd with exactly the same results. I also tried to upload to the workshop the .smd files from various models provided by valve (after reducing the triangles with blender) with exactly the same result.

I am very worried about this because I don´t know if this error is a game error or if this error is because I am doing something wrong.

ADITIONAL INFORMATION:

This is my export configuration when I export the model to .smd: http://i969.photobucket.com/albums/ae173/jtnilore/configuration_zps0febc940.jpg

Is someone else having the same problem? Do someone know what it the cause of this problem? I hope you can help me because I am hopeless T_T

Salutes