[zamoth]

I found another place in the registry :

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Installer\UserData\S-1-5-18\Products\F942F94A19C0F79468FD2B85E5E8677B\Insta llProperties]
"LocalPackage"="C:\\WINDOWS\\Installer\\3a9c59.msi "
"AuthorizedCDFPrefix"=""
"Comments"=""
"Contact"=""
"DisplayVersion"="8.0.50727.42"
"HelpLink"=""
"HelpTelephone"=""
"InstallDate"="20080515"
"InstallLocation"=""
"InstallSource"="C:\\DOCUME~1\\zamoth\\LOCALS~1\\T emp\\IXP001.TMP\\"
"ModifyPath"=hex(2):4d,00,73,00,69,00,45,00,78,00, 65,00,63,00,2e,00,65,00,78,\
00,65,00,20,00,2f,00,58,00,7b,00,41,00,34,00,39,00 ,46,00,32,00,34,00,39,00,\
46,00,2d,00,30,00,43,00,39,00,31,00,2d,00,34,00,39 ,00,37,00,46,00,2d,00,38,\
00,36,00,44,00,46,00,2d,00,42,00,32,00,35,00,38,00 ,35,00,45,00,38,00,45,00,\
37,00,36,00,42,00,37,00,7d,00,00,00
"NoModify"=dword:00000001
"NoRepair"=dword:00000001
"Publisher"="Microsoft Corporation"
"Readme"=""
"Size"=""
"EstimatedSize"=dword:00001448
"UninstallString"=hex(2):4d,00,73,00,69,00,45,00,7 8,00,65,00,63,00,2e,00,65,00,\
78,00,65,00,20,00,2f,00,58,00,7b,00,41,00,34,00,39 ,00,46,00,32,00,34,00,39,\
00,46,00,2d,00,30,00,43,00,39,00,31,00,2d,00,34,00 ,39,00,37,00,46,00,2d,00,\
38,00,36,00,44,00,46,00,2d,00,42,00,32,00,35,00,38 ,00,35,00,45,00,38,00,45,\
00,37,00,36,00,42,00,37,00,7d,00,00,00
"URLInfoAbout"=""
"URLUpdateInfo"=""
"VersionMajor"=dword:00000008
"VersionMinor"=dword:00000000
"WindowsInstaller"=dword:00000001
"Version"=dword:0800c627
"Language"=dword:00000000
"DisplayName"="Microsoft Visual C++ 2005 Redistributable"

Got it. It seems that I had non SP1 version.
Got latest version, and all seemed well.

I guess non SP1 version will still work ... sorry