Erreur infos médicales / consommation individuelles

Voici le message d'erreur qye j'obtiens quand je veux voir la liste des infos médicales
## 04/07/2017 08:34:56 | 1.2.0.0 | win32 Windows XP x86 ##
Traceback (most recent call last):
File "Noethys.py", line 3047, in On_individus_infos_med
File "Dlg\DLG_Impression_infos_medicales.pyc", line 274, in __init__
File "Ctrl\CTRL_Grille_periode.pyc", line 307, in __init__
File "Ctrl\CTRL_Grille_periode.pyc", line 263, in __init__
File "Ctrl\CTRL_Grille_periode.pyc", line 28, in __init__
File "wx\_controls.pyc", line 6523, in __init__
PyAssertionError: C++ assertion "(0 < day) && (day <= GetNumberOfDays(month, year))" failed at ..\..\src\common\datetime.cpp(1221) in wxDateTime::Set(): Invalid date in wxDateTime::Set()



Voici le message d'erreur que j'obtiens quand je veux voir les consommations individuelles
## 04/07/2017 08:35:24 | 1.2.0.0 | win32 Windows XP x86 ##
Traceback (most recent call last):
File "Dlg\DLG_Famille.pyc", line 547, in OnBoutonConsommations
File "Dlg\DLG_Grille.pyc", line 373, in __init__
File "Ctrl\CTRL_Grille_periode.pyc", line 307, in __init__
File "Ctrl\CTRL_Grille_periode.pyc", line 263, in __init__
File "Ctrl\CTRL_Grille_periode.pyc", line 28, in __init__
File "wx\_controls.pyc", line 6523, in __init__
PyAssertionError: C++ assertion "(0 < day) && (day <= GetNumberOfDays(month, year))" failed at ..\..\src\common\datetime.cpp(1221) in wxDateTime::Set(): Invalid date in wxDateTime::Set()

Merci de m'aider.
cdlt