Hello Boost-users, I'm trying to save a simple class to xml_woarchive: class StringContainer { std::map<std::string, std::wstring> mStrings; friend class boost::serialization::access; template<class TArchive> void serialize(TArchive& ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(mStrings); } public: typedef std::map<std::string, std::wstring> StringMap; StringContainer() {} ~StringContainer() {} void addString (const std::string& id, const std::wstring& str); bool isStringExists (const std::string& id) const; const std::wstring& getString(const std::string& id) const; void removeString (const std::string& id); }; // somewhere in main code: StringContainer sc; sc.addString("fps.profilerfl", L"FPS: "); sc.addString("triangles.profilerfl", L"Triangles: "); std::wofstream outfs("strings.xml"); assert(outfs.good()); boost::archive::xml_woarchive oa(outfs); oa << BOOST_SERIALIZATION_NVP(sc); But somewhere after it (i think it is in xml_woarchive destructor) my program falls with "Debug Assertion Failed" (I'm using VC7.1) message: HEAP[test.exe]: Invalid Address specified to RtlValidateHeap( 011B0000, 011F29E8 ) Unhandled exception at 0x77f767cd in test.exe: User breakpoint. By the way, xml file writes as expected: <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <sc class_id="0" tracking_level="0" version="0"> <mStrings class_id="1" tracking_level="0" version="0"> <count>2</count> <item class_id="2" tracking_level="0" version="0"> <first>fps.profilerfl</first> <second>FPS: </second> </item> <item> <first>triangles.profilerfl</first> <second>Triangles: </second> </item> </mStrings> </sc> </boost_serialization> What i'm doing incorrectly? -- Mike Lapshin