[Zope] zope error

[Atomasoft Network President]

Hello,   There is a problem with my zope.Whenever someone accesses the server it has an error and shuts down this is the last 2 lines of what it said: File "C:\Program Files\WebSite\ZServer\medusa\logger.py", line 65 in maybe_flush  self.file.flush() IOError: [Errno 9] Bad file descriptor   How do I fix this?   Thanks, Calin