ERROR: duplicate key violates unique constraint "pg_type_typname_nsp_index"

Hi,

     I'm not sure what the cause of this error is, but I figured I
should post it.  I had to restore from back to stop getting these errors
"ERROR:  cache lookup failed for type 813612037" .   This was from a
database running beta4, i'm now running beta5.

-michael

LOG:  unexpected EOF on client connection
ERROR:  duplicate key violates unique constraint "pg_type_typname_nsp_index"
ERROR:  duplicate key violates unique constraint "pg_type_typname_nsp_index"
CONTEXT:  SQL statement "create temp table tmp_children ( uniqid bigint,
memberid bigint, membertype varchar(50), ownerid smallint, tag varc
har(50), level int4 )"
        PL/pgSQL function "fngetcompositeids2" line 14 at SQL statement
ERROR:  duplicate key violates unique constraint "pg_type_typname_nsp_index"
CONTEXT:  SQL statement "create temp table tmp_children ( uniqid bigint,
memberid bigint, membertype varchar(50), ownerid smallint, tag varc
har(50), level int4 )"
        PL/pgSQL function "fngetcompositeids2" line 14 at SQL statement
ERROR:  cache lookup failed for type 813612037
FATAL:  cache lookup failed for type 813612037
LOG:  server process (PID 10449) exited with exit code 1
LOG:  terminating any other active server processes
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back
the current transaction and exit, because another server process exit
ed abnormally and possibly corrupted shared memory.
HINT:  In a moment you should be able to reconnect to the database and
repeat your command.
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back
the current transaction and exit, because another server process exit
ed abnormally and possibly corrupted shared memory.
--More--(74%)