Hello Whenever I try to use exists() on a wpath, I get an exception. I'm running Arch Linux, with Boost 1.34.1 and Gcc 4.2.2, if it matters. Here is some code: #include "boost/filesystem.hpp" using namespace boost::filesystem; int main() { wpath test(L"whatever/path"); exists(test); return 0; } Which compiles fine, but gives me this error message on runtime: terminate called after throwing an instance of 'boost::filesystem::basic_filesystem_error, std::allocator >, boost::filesystem::wpath_traits> >' what(): boost::filesystem::wpath::to_external conversion error Aborted Does anyone know what I am missing here?