What does this error mean?

What does this mean, please?:

bray=> select * from organisation* where id in (select c.org from
org_contact as c, organisation* as o where c.contact = '100020'
and c.org = o.id);
ERROR: ExecReScan: node type 12 not supported

and how can I get round it?

bray=> \d organisation

Table = organisation
+----------------------------------+----------------------------------+-------+
| Field | Type | Length|
+----------------------------------+----------------------------------+-------+
| id | char() not null | 10 |
| name | text not null | var |
| address | int4 | 4 |
| salutation | text default 'Dear Sir' | var |
| envelope | text | var |
| email | text | var |
| www | text | var |
| contact | char() | 10 |
+----------------------------------+----------------------------------+-------+
bray=> \d org_contact

Table = org_contact
+----------------------------------+----------------------------------+-------+
| Field | Type | Length|
+----------------------------------+----------------------------------+-------+
| org | char() not null | 10 |
| contact | char() not null | 10 |
| role | text not null | var |
| address | int4 | 4 |
+----------------------------------+----------------------------------+-------+

(PostgreSQL version 6.3.2, Linux, libc6)

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
PGP key from public servers; key ID 32B8FAA1
========================================
"If ye abide in me, and my words abide in you, ye shall
ask what ye will, and it shall be done unto you."
John 15:7