Hi all! I am trying to read an xml file with property tree (first try). Because I have dots int the tag names I must use the extended version of the get functions. So here is the slightly modified example code, which sadly does'nt compile on vc2008. Probably its a totally silly error on my side... // Loads debug_settings structure from the specified XML file void load(const std::string &filename) { // Create an empty property tree object using boost::property_tree::ptree; ptree pt; // Load the XML file into the property tree. If reading fails // (cannot open file, parse error), an exception is thrown. read_xml(filename, pt); // Get the filename and store it in the m_file variable. // Note that we construct the path to the value by separating // the individual keys with dots. If dots appear in the keys, // a path type with a different separator can be used. // If the debug.filename key is not found, an exception is thrown. std::string m_file = pt.get< std::string >( '/', "debug/filename" ); // Get the debug level and store it in the m_level variable. // This is another version of the get method: if the value is // not found, the default value (specified by the second // parameter) is returned instead. The type of the value // extracted is determined by the type of the second parameter, // so we can simply write get(...) instead of get<int>(...). int m_level = pt.get( '/', "debug/level", 0); // Iterate over the debug.modules section and store all found // modules in the m_modules set. The get_child() function // returns a reference to the child at the specified path; if // there is no such child, it throws. Property tree iterators // are models of BidirectionalIterator. std::vector< std::string > m_modules; BOOST_FOREACH( ptree::value_type &v, pt.get_child( '/', "debug/modules" ) ) { m_modules.push_back( v.second.data() ); } } vc says: 1>c:\projekte\proptreetest\proptreetest\proptreetest.cpp(23) : error C2664: 'std::basic_string<_Elem,_Traits,_Ax> boost::property_tree::basic_ptree<Key,Data>::get<std::string>(const boost::property_tree::string_path<String,Translator> &,const Type &) const': Konvertierung des Parameters 1 von 'char' in 'const boost::property_tree::string_path<String,Translator> &' nicht möglich 1> with 1> [ 1> _Elem=char, 1> _Traits=std::char_traits<char>, 1> _Ax=std::allocator<char>, 1> Key=std::string, 1> Data=std::string, 1> String=std::string, 1> Translator=boost::property_tree::id_translator<std::string>, 1> Type=std::string 1> ] 1> and 1> [ 1> String=std::string, 1> Translator=boost::property_tree::id_translator<std::string> 1> ] So, it looks to me like the compiler does'nt know about the extended get functions... Regards Dietmar