Hi: I'm trying to use boost.bind when starting a thread. The following code starts a thread and tries to pass in a boost.asio.io_service as well. boost::thread* t = new boost::thread(boost::bind(&boost::asio::io_service::run, &io)); I'm getting the following exception when running this code. Unhandled exception at 0x7c812afb in MDRLite.exe: Microsoft C++ exception: boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::system::system_error> > Removing the previous block of code removes the error. Having read the boost.bind, The boost.tread/boost.asio documentation I carn't seem to find what is wrong. This seems to be the final piece of the jigsaw that I carn't seem to crack! Any help appreciated. Cheers Sean.