tryton error create new database

[Mon May 07 13:00:16 2012] INFO:modules:ir:init ir.model.graph

[Mon May 07 13:00:16 2012] INFO:modules:ir:init ir.translation

[Mon May 07 13:00:16 2012] ERROR:sql:Wrong SQL: INSERT INTO ir_translation (name, lang, type, src, src_md5, value, module, fuzzy) VALUES (E'ir.translation,name', E'en_US', E'model', E'Translation', E'6dd08874f83507e9c7b23f1a46b7fa7c', E'', E'ir', false)

[Mon May 07 13:00:16 2012] ERROR:database:CREATE DB: tryton_demo failed

[Mon May 07 13:00:16 2012] ERROR:database:Exception in call:

Traceback (most recent call last):

  File "/usr/local/tryton/trytond/trytond/protocols/dispatcher.py", line 216, in create

    pool.init(update=True, lang=[lang])

  File "/usr/local/tryton/trytond/trytond/pool.py", line 120, in init

    lang=lang)

  File "/usr/local/tryton/trytond/trytond/modules/__init__.py", line 397, in load_modules

    load_module_graph(graph, pool, lang)

  File "/usr/local/tryton/trytond/trytond/modules/__init__.py", line 227, in load_module_graph

    obj.init(module)

  File "/usr/local/tryton/trytond/trytond/ir/translation.py", line 87, in init

    super(Translation, self).init(module_name)

  File "/usr/local/tryton/trytond/trytond/model/modelsql.py", line 46, in init

    super(ModelSQL, self).init(module_name)

  File "/usr/local/tryton/trytond/trytond/model/model.py", line 197, in init

    False))

  File "/usr/local/tryton/trytond/trytond/backend/postgresql/database.py", line 316, in execute

    res = self.cursor.execute(sql, params)

IntegrityError: null value in column "res_id" violates not-null constraint