Hi this is how it looks nel::OriginTaggedUsername mUsername; template<class Archive> void Serialise (Archive & aArchive, const unsigned int aVersion=0) { this->mUsername.Serialise(aArchive, aVersion); //when this call tooks place exception will happen in the below Serialise function of OriginTaggedData class aArchive & this->mSrcIP; aArchive & this->mSrcPort; } template< class T> class OriginTaggedData { public: template<class Archive> void Serialise (Archive & aArchive, const unsigned int aVersion=0) { aArchive & this->mValue; aArchive & this->mOrigin; } void Reset (void) { this->mValue = this->mUnknownValue; this->mOrigin = Secerno::SessionDataOriginNone; } const T& Value(void) const { return (this->mValue); } rno::SessionDataOrigin Origin(void) const { return (this->mOrigin);} std::string ToString (void) const { std::ostringstream lStrm; return (lStrm.str()); } private: T mUnknownValue; T mValue; rno::SessionDataOrigin mOrigin; protected: OriginTaggedData (const T& aUnknownValue) : mUnknownValue(aUnknownValue) { this->Reset(); } }; class OriginTaggedUsername : public OriginTaggedData<std::string> { public: OriginTaggedUsername (void) : OriginTaggedData<std::string>(rno::GetUnknownUsername()) { } ~OriginTaggedUsername (void) { } protected: private: }; -- View this message in context: http://boost.2283326.n4.nabble.com/Boost-1-41-Binary-archive-exceptions-tp42... Sent from the Boost - Dev mailing list archive at Nabble.com.