Hi, Here is the code snippet I am using under windows in VS2008. #define BOOST_WINDOWS_PATH #define BOOST_WINDOWS_API #include "stdafx.h" #include <boost/filesystem/operations.hpp> #include <boost/filesystem/fstream.hpp> #include <iostream> #include "string" #include "conio.h" #include "vector" using namespace std; using namespace boost::filesystem; int _tmain(int argc, _TCHAR* argv[]) { string _path = "E:\\doggy"; path dir_path(_path.c_str()); vector< pair<string,bool> > _file_jpeg_pair; string full_list_path = _path+"\\" + "list.txt"; string bundle_path_str = _path+"\\" + "bundle"; path bundle_path(_path.c_str()); //creating bundle directory cout<<bundle_path<<endl; //if( !exists( bundle_path ) ) create_directory(bundle_path); cout<<"directory created "<<endl; getch(); return 0; } This code is giving run time unhandled exception, so for that matter any other call of boost filesystem. Strange thing is the Windows path E:\doggy is being printed as E:/doggy, seems like the path is getting converted to POSIX format. Can anyone please help me here?... Thanks Avanindra