https://svn.boost.org/trac10/ticket/9575 <p> is_directory() returns false with NTFS mounted volumes in Windows. This look like the same problem as <a class="new ticket" href="https://svn.boost.org/trac10/ticket/5649" title="#5649: Bugs: create_directories() fails with NTFS mounted volumes (new)">#5649</a>, but the consequences are more serious I think. Some people put the temp directory on a mounted volume, and in this case temp_directory_path() fails although windows has a valid temporary directory. I use some commercial software that uses temp_directory_path() which will fail without useful error messages. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/9575 Trac 1.4.3