id summary reporter owner description type status milestone component version severity resolution keywords cc 5579 1_40_0 serialization break. Phil Hartmann Robert Ramey "If you compare 1_39 and 1_40 here, you can see one 1_39 compares the addresses of functions to get type information. Which in 1_40 was 'fixed' so that types across DLL's would be matched. However this of course breaks archive compatibility with 1_39 as the two dll's will have serialized out the CO info twice, and now in 1_40 and beyond it'll only try to read it once.. Leaving the file corrupted. http://www.boost.org/doc/libs/1_39_0/boost/archive/detail/basic_serializer.hpp http://www.boost.org/doc/libs/1_40_0/boost/archive/detail/basic_serializer.hpp I'm not even sure how this can be fixed short of storing a flag to determine how cobject's compare thats based on archive version where the comparison starts... " Bugs new To Be Determined serialization Boost 1.46.1 Showstopper serialization object cross dll