Hi, I've been using boost for a while now and it's brilliant! :D Anyway, I'm using serialization in my code and was wondering why I was catching an exception where the what() reported "uninitialized exception". Eventually I worked it out (After much debugging) that I was catching the exception like this: } catch( std::exception & e ) { std::cout << e.what() << std::endl; I found out that my xml tags could not have namespace qualifiers in them (I.e. "blah::abc" would not work) and that it would throw a boost::archive::xml_archive_exception. This obviously didn't work with an std::exception and defaulted to an uninitialised exception. So my question is: am I catching the exceptions in the wrong way? Whats the right way? Should I use a more specific boost exception class? Thank-you! - Ash