swith version use, can't connect to database

hello,

I have some trouble to connect to a database with the version 1.14.1
and 1.14.0 of pgAdminIII
but connection is ok with v1.8

log :

2012-01-27 09:43:57 INFO   : Attempting to create a connection object...
2012-01-27 09:43:57 STATUS : Connexion à la base de données...
2012-01-27 09:43:57 INFO   : Opening connection with connection
string: host='localhost' dbname='postgres' user='postgres'
password='XXXXXX' port=10031 sslmode=disable application_name='pgAdmin
III - Navigateur'
2012-01-27 09:43:57 STATUS : Connexion à la base de données... (0,29 secondes)
2012-01-27 09:43:57 ERROR  : Error connecting to the server:


thanks