*** src/allmydata/frontends/ftpd.py	Fri Apr 10 22:08:44 2009
--- src/allmydata/frontends/ftpd.py	Fri Apr 10 22:08:22 2009
*************** class Handler:
*** 196,201 ****
--- 196,203 ----
                      value = 0
                  else:
                      value = childnode.get_size()
+                     if not isinstance(value, (int, long)):
+                         value = 0
              elif key == "directory":
                  value = isdir
              elif key == "permissions":