How can I post the file itself? Post the scene?
Dude I finaly come with a solution for this proble I have for so long, I dont know why, but I instal the old cloth, and then save the scene in .ma, and it save it correctly! but in .mb is giving me the same issue.

I dont know why with the old cloth instaled let me save in .ma, but with out it, it wont let me save.. my scene one time use to have that cloth, but I remove the solver, and the cloth objects like a month ago, and continue modeling the character. So I guess that cloth is no longer in my scene from maya 7.0

Whats the diference in saving in .mb or .ma?