SP2 for WinCC Flex 2008 installation problem

Hi Guys,

I tryto install SP2 for WinCC Flexible 2008 over Windows XP SP2. Installation procedure does not complete succesfully,I geterror messages respectively like in attachment.
Do You have any idea what the problem may be?

Thanks in advance.
Radek

Reinstalling Windows Installer

1

Click on "Start" and click on "Run..."

2

Type "cmd" or "command" in the box and click on "OK."

3

Type each of these lines of information and press "Enter" after each completed line:
cd %windir%\system32
attrib -r -s -h dllcache
ren msi.dll msi.old
ren msiexec.exe msiexec.old
ren msihnd.dll msihnd.old
exit

4

Type "Exit" and press "Enter" to close the "Command" screen and restart your computer.

Download the Windows Installer 4.5 files and install them to your computer. Accept any terms of agreement (the installation will be refused if you decline them). Restart your computer to allow the changes to take affect. This should fix Microsoft Windows Installer and allow you to install, repair, and uninstall programs on your computer.

Service Pack 2 for SIMATIC WinCC flexible 2008

Support of the following Operating Systems

Engineering System

• Microsoft Windows XP Home with SP3 (only WinCC flexible Micro)
• Microsoft Windows XP Professional with SP3
• Microsoft Windows 7 Professional (32 Bit), Ultimate (32 Bit), Enterprise (32 Bit)

Runtime System

• Microsoft Windows XP Embedded with SP2 (only for enabled platforms e.g. Panel PC 477).
• Microsoft Windows XP Professional with SP3
• Microsoft Windows 7 Professional (32 Bit), Ultimate (32 Bit), Enterprise (32 Bit)