jdbc1 large objects and 651 -- does it work for anyone

Calling setBytes or any attempt to do LargeObject.write(byte[])
returns

[on the java side]
Oid gotten from lom.create() is 641377
FastPath call returned ERROR: lo_write: invalid large obj descriptor (0)

at postgresql.fastpath.Fastpath.fastpath(Fastpath.java:141)
at postgresql.fastpath.Fastpath.fastpath(Fastpath.java:188)
at postgresql.largeobject.LargeObject.write(LargeObject.java:173)
at RestoreBlobs.main(RestoreBlobs.java:298)

The -d3 log of the postmaster has

nitPostgres
StartTransactionCommand
query: set datestyle to 'ISO'
ProcessUtility: set datestyle to 'ISO'
CommitTransactionCommand
StartTransactionCommand
query: select proname, oid from pg_proc where proname = 'lo_open' or proname = 'lo_close' or proname = 'lo_creat' or proname = 'lo_unl\
ink' or proname = 'lo_lseek' or proname = 'lo_tell' or proname = 'loread' or proname = 'lowrite'
ProcessQuery
CommitTransactionCommand
StartTransactionCommand
CommitTransactionCommand
StartTransactionCommand
CommitTransactionCommand
StartTransactionCommand
ERROR: lo_write: invalid large obj descriptor (0)
AbortCurrentTransaction
pq_recvbuf: unexpected EOF on client connection
proc_exit(0) [#0]
shmem_exit(0) [#0]
exit(0)
pq_recvbuf: unexpected EOF on client connection
proc_exit(0) [#0]
shmem_exit(0) [#0]
exit(0)
pq_recvbuf: unexpected EOF on client connection
proc_exit(0) [#0]
shmem_exit(0) [#0]
exit(0)