Comment 7 for bug 120371

I had the same problem (Revelation 0.4.11, Ubuntu 8.04), fixed /usr/share/pyshared/revelation/datahandler/pwsafe.py with this patch:

--- pwsafe.py.BAK 2007-05-22 19:56:39.000000000 +1200
+++ pwsafe.py 2010-01-11 13:34:22.000000000 +1300
@@ -574,7 +574,10 @@
                                edata += create_field(uuid, FIELDTYPE_UUID)
                                edata += create_field(self.__get_group(entrystore, iter), FIELDTYPE_GROUP)
                                edata += create_field(e.name.encode(enc, "replace"), FIELDTYPE_TITLE)
- edata += create_field(e[entry.UsernameField].encode(enc, "replace"), FIELDTYPE_USER)
+ s = e[entry.UsernameField]
+ if s is None:
+ s = ""
+ edata += create_field(s.encode(enc, "replace"), FIELDTYPE_USER)
                                edata += create_field(e[entry.PasswordField].encode(enc, "replace"), FIELDTYPE_PASSWORD)
                                edata += create_field(e.description.encode(enc, "replace"), FIELDTYPE_NOTES)
                                edata += create_field("", FIELDTYPE_END)

-- Stuart Rackham