Dear, In the documentation of boost::serialization, I read that there is still work needed to have a portable (32 and 64 bits) binary serialization implementation. The date of the TODO is 2008. Is still this a current TODO? is there a library implementing this? currently, It is not a matter of dead or live, but I would like to know. I have been trying to run a code in different (bits) systems, and I got the error "Incompatible native format - size of int" Best regards / Cordialmente, -- William Oquendo Phd Candidate Simulation Of Physical Systems Group Universidad Nacional de Colombia Linux User # 321481 ********************* Este correo puede carecer de tildes o eñes ya que el teclado no contiene estos caracteres. Presento excusas por eso. *********************