BUG #6129: The installation fails with the error message: "Unable to write inside TEMP environment path"

The following bug has been logged online:

Bug reference: 6129
Logged by: Mario Danelli
Email address: mario(dot)danelli(at)gmail(dot)com
PostgreSQL version: 9.0.4 (32 bit)
Operating system: Windows 7 Home Premium (64 bit)
Description: The installation fails with the error message: "Unable
to write inside TEMP environment path"
Details:

The installation on Windows 7 Home Premium (64 bit) fails immediately after
the double-click on the installer "postgresql-9.0.4-1-windows.exe" (32 bit)
with the error "Unable to write inside TEMP environment path".

The bitrock_installer.log file contains:

Log started 07/22/11 at 22:28:23
Preferred installation mode : qt
Trying to init installer in mode qt
Mode qt successfully initialized
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0 Data
Directory. Setting variable iDataDirectory to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0 Base
Directory. Setting variable iBaseDirectory to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0 Service
ID. Setting variable iServiceName to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0 Service
Account. Setting variable iServiceAccount to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0 Super
User. Setting variable iSuperuser to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0
Branding. Setting variable iBranding to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0 Version.
Setting variable brandingVer to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0
Shortcuts. Setting variable iShortcut to empty value
Could not find registry key
HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0
DisableStackBuilder. Setting variable iDisableStackBuilder to empty value
[22:28:28] Existing base directory:
[22:28:28] Existing data directory:
[22:28:28] Using branding: PostgreSQL 9.0 (x86)
[22:28:28] Using Super User: postgres and Service Account: postgres
[22:28:28] Using Service Name: postgresql-9.0
Executing cscript //NoLogo
"C:\Users\xyz\AppData\Local\Temp\prerun_checks.vbs"
Script exit code: 1

Script output:
Errore CScript: Impossibile trovare l'interprete di script "VBScript" per
lo script "C:\Users\xyz\AppData\Local\Temp\prerun_checks.vbs".

Script stderr:
Program ended with an error exit code

Error running cscript //NoLogo
"C:\Users\xyz\AppData\Local\Temp\prerun_checks.vbs" : Program ended with an
error exit code

The strange thing is that the installation of 64 bit version of the same pg
9.0.4 complete succesfully so i suppose that the vbscript launcher is
correctly installed and configured.

I need to use 32 bit version because i want to add PostGIS not yet released
for the 64 bit pg version.

Thanks in advance