Let's break it down to basics for now. Why would a simple sysopen fail on a directory known to exist (i.e. successful use of open confirms the directory exists)? I use a filename that exists and one that doesn't and both fail the same way. I checked the IUSR_XXXX permissions on the directory and also the current system user and both have suffice permissions. Is there another approach to determine why the sysopen is failing? Thankd again.