The buttons stop working

hi, check right here please:

here´s my problem, all the buttons on the left load an external swf, works great but my problem is when I access one of the buttons on the bottom-right corner ( “contacto” or the other one) and then when Im there press “atras” (back), it loads again all the interfase but my buttons panel dont work anymore, the button “atras” has an action that goes to the first frame, I can find the problem, check the FLA with the interfase, I also attach the first 3 external swf´s, maybe someone can point me out in what Im doing wrong :puzzle: thanks very much! :slight_smile:

EDIT: oops, I include the the first 2 external swf´s and the fourth :stuck_out_tongue: