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Bonjour je n'arrive pas installer aucune versionde postgresql sur mon ordinateur
mon system d'exploitation c'est: windows 7 64 bits
j'ai instalé le Package redistribuable Microsoft Visual C++ 2010
et voici le fichier log
en vous remerciant

Log started 05/13/2014 at 15:47:08
Preferred installation mode : qt
Trying to init installer in mode qt
Mode qt successfully initialized
Executing C:\temp/postgresql_installer_b9d290be24/temp_check_comspec.bat
Script exit code: 0

Script output:
"test ok"

Script stderr:

Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Data Directory. Setting variable iDataDirectory to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Base Directory. Setting variable iBaseDirectory to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Service ID. Setting variable iServiceName to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Service Account. Setting variable iServiceAccount to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Super User. Setting variable iSuperuser to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Branding. Setting variable iBranding to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Version. Setting variable brandingVer to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 Shortcuts. Setting variable iShortcut to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-9.3 DisableStackBuilder. Setting variable iDisableStackBuilder to empty value
[15:47:12] Existing base directory:
[15:47:12] Existing data directory:
[15:47:12] Using branding: PostgreSQL 9.3
[15:47:12] Using Super User: postgres and Service Account: NT AUTHORITY\NetworkService
[15:47:12] Using Service Name: postgresql-x64-9.3
Executing cscript //NoLogo "C:\temp\postgresql_installer_b9d290be24\prerun_checks.vbs"
Script exit code: 1

Script output:
Erreur CScript: Impossible de trouver le moteur de script "VBScript" pour le script "C:\temp\postgresql_installer_b9d290be24\prerun_checks.vbs".