Error when selecting rows from a temporary table in ODBC

When we execute this query in psql over linux, we don't get any errors

select sum(valor) as totalCR, count(correlativo) as docsCR, caja into tmp_cr
from transaccion as t, codigocaja as c
where c.codigo = t. codigo
and c.tipomov = 'CR'
group by caja;

select sum(valor) as totalDB, count(correlativo) as docsDB, caja into tmp_db
from transaccion t, codigocaja c
where c.codigo = t. codigo
and c.tipomov = 'DB'
group by caja;

select db.caja, totalcr, totaldb, docsdb, docscr
from tmp_db db, tmp_cr cr
where cr.caja = db.caja;

But when we execute it on PGAdmin (Windows via ODBC) we get the following
error message: ERROR from backend during clear: 'ERROR: relation_info:
Relation 2300301 not found

Following is the message in psqlodbc.log,

conn=57295424, query='drop table tmp_cr; drop table tmp_db; select
sum(valor) as totalCR, count(correlativo) as docsCR, caja into tmp_cr from
transaccion as t, codigocaja as c where c.codigo = t. codigo and c.tipomov =
'CR' group by caja; select sum(valor) as totalDB, count(correlativo) as
docsDB, caja into tmp_db from transaccion t, codigocaja c where c.codigo =
t. codigo and c.tipomov = 'DB' group by caja; select db.caja, totalcr,
totaldb, docsdb, docscr from tmp_db db, tmp_cr cr where cr.caja = db.caja; '
NOTICE from backend during send_query: 'NOTICE: mdopen: couldn't open
tmp_db: No such file or directory
'
NOTICE from backend during send_query: 'NOTICE: mdopen: couldn't open
tmp_cr: No such file or directory
'
NOTICE from backend during send_query: 'NOTICE: mdopen: couldn't open
tmp_db: No such file or directory
'
NOTICE from backend during send_query: 'NOTICE: mdopen: couldn't open
tmp_cr: No such file or directory
'
NOTICE from backend during send_query: 'NOTICE: mdopen: couldn't open
tmp_cr: No such file or directory
'
NOTICE from backend during send_query: 'NOTICE: mdopen: couldn't open
tmp_cr: No such file or directory
'
NOTICE from backend during clear: 'NOTICE: mdopen: couldn't open tmp_db: No
such file or directory
'
NOTICE from backend during clear: 'NOTICE: mdopen: couldn't open tmp_db: No
such file or directory
'
Command response: 'DROP'
Command response: 'SELECT'
Command response: 'SELECT'
ERROR from backend during clear: 'ERROR: relation_info: Relation 2300301
not found
'
STATEMENT ERROR: func=SC_execute, desc='', errnum=-1, errmsg='Error while
executing the query (non-fatal)'
-----------------------------------------------------------
-
hdbc=57295424, stmt=57310092, result=63909376
manual_result=0, prepare=0, internal=0
bindings=0, bindings_allocated=0
parameters=0, parameters_allocated=0
statement_type=6, statement='drop table tmp_cr; drop table
tmp_db; select sum(valor) as totalCR, count(correlativo) as docsCR, caja
into tmp_cr from transaccion as t, codigocaja as c where c.codigo = t.
codigo and c.tipomov = 'CR' group by caja; select sum(valor) as totalDB,
count(correlativo) as docsDB, caja into tmp_db from transaccion t,
codigocaja c where c.codigo = t. codigo and c.tipomov = 'DB' group by caja;
select db.caja, totalcr, totaldb, docsdb, docscr from tmp_db db, tmp_cr cr
where cr.caja = db.caja; '
stmt_with_params='drop table tmp_cr; drop table tmp_db;
select sum(valor) as totalCR, count(correlativo) as docsCR, caja into tmp_cr
from transaccion as t, codigocaja as c where c.codigo = t. codigo and
c.tipomov = 'CR' group by caja; select sum(valor) as totalDB,
count(correlativo) as docsDB, caja into tmp_db from transaccion t,
codigocaja c where c.codigo = t. codigo and c.tipomov = 'DB' group by caja;
select db.caja, totalcr, totaldb, docsdb, docscr from tmp_db db, tmp_cr cr
where cr.caja = db.caja; '
data_at_exec=-1, current_exec_param=-1, put_data=0
currTuple=-1, current_col=-1, lobj_fd=-1
maxRows=0, rowset_size=1, keyset_size=0, cursor_type=0,
scroll_concurrency=1
cursor_name='SQL_CUR036A7B8C'
----------------QResult
Info -------------------------------
fields=63909344, manual_tuples=0, backend_tuples=0,
tupleField=0, conn=0
fetch_count=0, fcount=0, num_fields=0, cursor='(NULL)'
message='(NULL)', command='DROP', notice='NOTICE: mdopen:
couldn't open tmp_cr: No such file or directory
'
status=6, inTuples=0
CONN ERROR: func=SC_execute, desc='', errnum=110, errmsg='ERROR:
relation_info: Relation 2300301 not found
'
------------------------------------------------------------
henv=63901552, conn=57295424, status=1, num_stmts=16
sock=63901504, stmts=63901424, lobj_type=-999
---------------- Socket Info -------------------------------
socket=180, reverse=0, errornumber=0, errormsg='(NULL)'
buffer_in=57301892, buffer_out=57305992
buffer_filled_in=3, buffer_filled_out=0, buffer_read_in=2

Thank you for your help!

Ligia