Error on connect (1.8.0 beta 3)

I just downloaded 1.8.0 Beta3 (WinXP SP2) and upgraded from the Beta2
(using tj. I connected to a remote server running "PostgreSQL 8.1.4 on
x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 3.3.5 (Debian
1:3.3.5-13)" and I got the following error:

---------------------------
pgAdmin III
---------------------------
An error has occurred:

ERROR:  syntax error at or near "pg_get_userbyid"
LINE 1: ...T ts.oid, spcname, spclocation, '' AS description pg_get_use...
                                                             ^

---------------------------
OK
---------------------------


After I clicked the OK button all seemed to be ok (I was connected and
the DB tree was listed, tho a bit slower that normal).

Later I deinstalled Beta3 and reinstalled Beta2 - no such error on
connecting to the same server. The authentication is MD5 and the
password is saved in pgpass.conf.

--
Milen A. Radev