[Boost-users] [iostreams] Seeking with using stream<file_descriptor>::seekp() failes

Hello Why do I get 'debug assertion failed: initialized_' when I try to seek on a boost::filesystem::stream ? I also tried with my own class seekable_fd: public device<seekable> { protected file_descriptor file_d; //.... }; to be use the device is seekable, and I get the same assert. I have boost 1.44.0, VS 2008, Win7 Thank you, Timothy Madden