[Mailman-Users] No such file or directory when using /admin

[Roy Rapoport]

Having copied a mailman directory (preserving permissions as far as we can
see) from one machine to another, when we try to use
http://<machine>mailman/admin/<list>, we get:
---
Traceback (innermost last):
  File "/home/mailman/scripts/driver", line 112, in run_main
    main()
  File "/home/mailman/Mailman/Cgi/admin.py", line 65, in main
    lst = MailList.MailList(list_name)
  File "/home/mailman/Mailman/MailList.py", line 62, in __init__
    self.Load()
  File "/home/mailman/Mailman/MailList.py", line 804, in Load
    self.Lock()
  File "/home/mailman/Mailman/MailList.py", line 1373, in Lock
    self.__lock.lock()
  File "/home/mailman/Mailman/LockFile.py", line 186, in lock
    os.link(self.__lockfile, self.__tmpfname)
OSError: [Errno 2] No such file or directory
---

I checked (some of) the archives; the other situations I've seen that were
similar involved bogus lockfiles.  Right now, my ~mailman/locks directory
is empty, so I don't think that's it.  

BTW, check_perms gives no problems.

Suggestions?

-roy