"field doesn't exist" even though I'm sure it does

Hey everybody. I've got a strange one today. I'm trying to convert an
extremely messy access sql query into something that can be used with
our postgresql database (the pgsql db is being built to replace the
access db). I had barely begun trying to convert it when I was
confronted with this error message:

column "isactive" of relation "membermailingaddress" does not exist

However, a quick \d in psql let's me know that there is indeed a field
"isactive" on that specific table. I can't begin to imagine why it would
throw an error like this.

Here's my psql output, with a simple test query to reproduce the issue,
and a \d membermailingaddress afterwards. Anybody have any ideas?

current=# insert into membermailingaddress(
current(# mb_cn_num,
current(# mb_acct_num,
current(# IsActive,
current(# IsMember
current(# )
current-# VALUES
current-# (
current(# 1,
current(# 1500.0,
current(# TRUE,
current(# FALSE
current(# )
current-# ;
ERROR:  column "isactive" of relation "membermailingaddress" does not exist
LINE 4: IsActive,
        ^
current=# \d membermailingaddress
    Table "public.membermailingaddress"
     Column      |     Type     | Modifiers
-----------------+--------------+-----------
 mb_cn_num       | integer      |
 mb_acct_num     | numeric(6,1) |
 IsActive        | boolean      |
 IsMember        | boolean      |
 IsMail          | boolean      |
 IsPromoMail     | boolean      |
 HouseholdID     | numeric      |
 HouseholdSize   | integer      |
 Name1           | text         |
 Name2           | text         |
 Addr1           | text         |
 Addr2           | text         |
 Addr3           | text         |
 City            | text         |
 State           | text         |
 Zip             | text         |
 Zip5            | text         |
 xxPrimaryName   | text         |
 xxJointName     | text         |
 xxHouseholdHash | text         |

current=#

TIA

Thomas R. Hart II
tomhart@coopfed.org