I compiled the following program wiht no errors on my vc 7.1 system with no errors or warnings Robert Ramey #include <fstream> #include #include #include #include class gps_position { friend std::ostream & operator<<(std::ostream &os, const gps_position &gp); friend class boost::serialization::access; int degrees; int minutes; float seconds; template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */){ ar & degrees & minutes & seconds; } public: // every serializable class needs a constructor gps_position(){}; gps_position(int _d, int _m, float _s) : degrees(_d), minutes(_m), seconds(_s) {} }; void save(const std::string & filename) { //boost::recursive_mutex::scoped_lock lock(_nodeMutex); std::ofstream outFile; outFile.open(filename.c_str(), std::ios::binary); boost::archive::text_oarchive archiveFile(outFile); // simple test const gps_position g; archiveFile << g; outFile.close(); } Robert Ramey cheesy4poofs wrote:

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Try removing the line

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#include

And let me know that happens.

I believe this problem is a remnant of a header depency issue which will be addressed in the next release.

Robert Ramey

Thanks for the response. I actually didn't have that #include in my original code. I added it in a futile attempt to see if that would fix the issue. I still see the same compile errors when I remove that #include line.

Scott