Bad (null) varchar() external representation

Hi all,

I'm getting the following problem when trying to do a simple insert
statement...

"Bad (null) varchar() external representation"

WHY?

I'm running PostgreSQL 7.03 on Linux Mandrake 7.2 (using a specially
compiled version, not an RPM).

Here's the table :

foobar=# \d staff_details
Table "staff_details"
Attribute | Type | Modifier
----------------+--------------+----------
userid | varchar(24) | not null
password | char(13) |
name | varchar(96) |
role | smallint |
dob | date |
phone_one | varchar(14) |
phone_two | varchar(14) |
phone_three | varchar(14) |
address | varchar(280) |
status | smallint |
managers_notes | varchar(600) |
Index: staff_details_pkey
Constraints: (length(userid) < 25)
(length("password") < 14)
(length(name) < 97)
(length(phone_one) < 17)
(length(phone_two) < 17)
(length(phone_three) < 17)
(length(address) < 281)
(length(managers_notes) < 601)

foobar=# insert into staff_details values ('A', NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL);
ERROR: Bad (null) varchar() external representation
foobar=# insert into staff_details (userid, password, name, role, dob,
phone_one) values ('0000111122223333', 'foobarbaz1234', 'Joshua', 1,
'1970-07-01', '(03) 9867 5432');
ERROR: Bad (null) varchar() external representation
foobar=# insert into staff_details values ('0000111122223333',
encrypt('foo'), 'Joshua', 1, '1970-07-01', '(03) 9867 5432', '(041) 309
2819', NULL, '1 Blankety-Blank Way\nBazzville', NULL, NULL);
ERROR: Bad (null) varchar() external representation

etc...

I've tried everything I can think of, also exported and reloaded the
database, etc. This is a new table with nothing in it.

This is driving me nuts. :-(

+ Justin Clift
Database Administrator