I installed Silverlight and my PC began running funny. When I removed Silverlight, an "update" remains that cannot be removed. I did system restore...this update cannot be removed in add/remove no matter what I've tried. Microsoft has no answers and their last one was to run an XP REPAIR and I'm a little worried about doing that because I'm not sure if I'll lose anything. I even removed the code ( 69F1CF92-4A66-4785-BBBD-849EA1B686DA) from the registry! Nothing remains anywhere except the "update" in add/remove when you check the "show updates" box. Any ideas???

Can you try running the Windows Installer Cleanup utility and seeing if that helps: http://support.microsoft.com/kb/290301 ?

I tried it with no luck. I can't find this "update" anywhere but in the add/remove window (when showing all updates). Thank you anyways!

What happens when you try to install Silverlight again? Can you post the most recent SilverlightMSI<random digits> and SilverlightUI<random digits> in your %temp% directory after installing again?

When I try to install it again it fails.

SilverlightMSI:

=== Verbose logging started: 3/11/2008  22:25:28  Build type: SHIP UNICODE 3.01.4000.4039  Calling process: c:\temp\ext45874\install.exe ===
MSI (c) (44:80) [22:25:28:319]: SOFTWARE RESTRICTION POLICY: Verifying package --> 'c:\temp\ext45874\Silverlight.msi' against software restriction policy
MSI (c) (44:80) [22:25:28:349]: SOFTWARE RESTRICTION POLICY: c:\temp\ext45874\Silverlight.msi has a digital signature
MSI (c) (44:80) [22:25:28:690]: SOFTWARE RESTRICTION POLICY: c:\temp\ext45874\Silverlight.msi is permitted to run at the 'unrestricted' authorization level.
MSI (c) (44:80) [22:25:29:290]: Cloaking enabled.
MSI (c) (44:80) [22:25:29:290]: Attempting to enable all disabled priveleges before calling Install on Server
MSI (c) (44:80) [22:25:29:330]: End dialog not enabled
MSI (c) (44:80) [22:25:29:330]: Original package ==> c:\temp\ext45874\Silverlight.msi
MSI (c) (44:80) [22:25:29:330]: Package we're running from ==> c:\temp\ext45874\Silverlight.msi
MSI (c) (44:80) [22:25:29:330]: APPCOMPAT: looking for appcompat database entry with ProductCode '{89F4137D-6C26-4A84-BDB8-2E5A4BB71E00}'.
MSI (c) (44:80) [22:25:29:330]: APPCOMPAT: no matching ProductCode found in database.
MSI (c) (44:80) [22:25:29:341]: MSCOREE not loaded loading copy from system32
MSI (c) (44:80) [22:25:29:361]: Note: 1: 2262 2: File 3: -2147287038
MSI (c) (44:80) [22:25:29:361]: Note: 1: 2205 2:  3: MsiFileHash
MSI (c) (44:80) [22:25:29:361]: Opening existing patch 'c:\WINDOWS\Installer\bb70a16.msp'.
MSI (c) (44:80) [22:25:29:371]: Note: 1: 2203 2: c:\WINDOWS\Installer\bb70a16.msp 3: -2147287038
MSI (c) (44:80) [22:25:29:371]: Couldn't find local patch 'c:\WINDOWS\Installer\bb70a16.msp'. Looking for it at its source.
MSI (c) (44:80) [22:25:29:371]: Resolving Patch source.
MSI (c) (44:80) [22:25:29:371]: User policy value 'SearchOrder' is 'nmu'
MSI (c) (44:80) [22:25:29:371]: User policy value 'DisableMedia' is 0
MSI (c) (44:80) [22:25:29:371]: Machine policy value 'AllowLockdownMedia' is 0
MSI (c) (44:80) [22:25:29:371]: SOURCEMGMT: Media enabled only if package is safe.
MSI (c) (44:80) [22:25:29:371]: SOURCEMGMT: Looking for sourcelist for product {69F1CF92-4A66-4785-BBBD-849EA1B686DA}
MSI (c) (44:80) [22:25:29:371]: SOURCEMGMT: Adding {69F1CF92-4A66-4785-BBBD-849EA1B686DA}; to potential sourcelist list (pcode;disk;relpath).
MSI (c) (44:80) [22:25:29:371]: SOURCEMGMT: Now checking product {69F1CF92-4A66-4785-BBBD-849EA1B686DA}
MSI (c) (44:80) [22:25:29:371]: Note: 1: 2718 2: {69F1CF92-4A66-4785-BBBD-849EA1B686DA}
MSI (c) (44:80) [22:25:29:371]: SOURCEMGMT: Failed to resolve source
The installation source for this product is not available.  Verify that the source exists and that you can access it.
c:\temp\ext45874\Silverlight.msi
MSI (c) (44:80) [22:25:29:371]: Note: 1: 1708
MSI (c) (44:80) [22:25:29:371]: Note: 1: 2729
MSI (c) (44:80) [22:25:29:381]: Note: 1: 2729
MSI (c) (44:80) [22:25:29:381]: Product: Microsoft Silverlight -- Installation failed.

=== Verbose logging stopped: 3/11/2008  22:25:29 ===

SilverlightUI:

[03/11/08,22:25:28] ========== Logging started ==========
[03/11/08,22:25:28] =====================================
[03/11/08,22:25:28] Logging property values
[03/11/08,22:25:28] PROPERTY ProductName Silverlight
[03/11/08,22:25:28] PROPERTY  c:\temp\ext45874\Silverlight.msi
[03/11/08,22:25:28] PROPERTY ProductMsi Silverlight.msi
[03/11/08,22:25:28] PROPERTY ProductCode 
[03/11/08,22:25:28] PROPERTY ProductRegKey 
[03/11/08,22:25:28] PROPERTY ProductRegValue 
[03/11/08,22:25:28] PROPERTY ProductRegData 
[03/11/08,22:25:28] PROPERTY ProductSupportURL http://go.microsoft.com/fwlink/?LinkID=87096&errorID=xxxx
[03/11/08,22:25:28] PROPERTY DefaultDirInstallToken 
[03/11/08,22:25:28] PROPERTY Install DetectDarwin
[03/11/08,22:25:28] PROPERTY SupportWin9X 0
[03/11/08,22:25:28] PROPERTY MinNTVersion 5.1
[03/11/08,22:25:28] PROPERTY CheckAdminRights 1
[03/11/08,22:25:28] PROPERTY BlockOn64Platform 0
[03/11/08,22:25:28] PROPERTY ShowFeatureOptions 0
[03/11/08,22:25:28] PROPERTY ShowDestinationFolder 0
[03/11/08,22:25:28] PROPERTY LogFilePrefix Silverlight
[03/11/08,22:25:28] PROPERTY CustomTextPrefix 
[03/11/08,22:25:28] PROPERTY MSI Log name C:\DOCUME~1\John\LOCALS~1\Temp\SilverlightMSI12AB.txt
[03/11/08,22:25:28] PROPERTY Msi Command Line properties 
[03/11/08,22:25:28] PROPERTY VerboseLog 1
[03/11/08,22:25:28] PROPERTY RebootMode 0
[03/11/08,22:25:28] PROPERTY UILanguage 1033
[03/11/08,22:25:28] PROPERTY  
[03/11/08,22:25:28] PROPERTY User Canceled 0
[03/11/08,22:25:28] PROPERTY Red BackColor
[03/11/08,22:25:28] PROPERTY Green BackColor
[03/11/08,22:25:28] PROPERTY Blue BackColor
[03/11/08,22:25:28] PROPERTY Current Dir c:\temp\ext45874\
[03/11/08,22:25:28] PROPERTY Temp Dir C:\DOCUME~1\John\LOCALS~1\Temp\
[03/11/08,22:25:28] PROPERTY Usage Mode 0
[03/11/08,22:25:28] PROPERTY Admin Mode 0
[03/11/08,22:25:28] PROPERTY Maintenance Mode 
[03/11/08,22:25:28] PROPERTY Silent Mode 0
[03/11/08,22:25:28] PROPERTY Silent Mode Uninstall 0
[03/11/08,22:25:28] PROPERTY WatsonSilent 0
[03/11/08,22:25:28] PROPERTY WatsonUI 0
[03/11/08,22:25:28] PROPERTY Silent Mode UI string 
[03/11/08,22:25:28] PROPERTY SkipAllChecks 0
[03/11/08,22:25:28] PROPERTY WatsonGenerateManifestOnly 
[03/11/08,22:25:28] PROPERTY UninstallWarning 
[03/11/08,22:25:28] PROPERTY ControlMSIService 
[03/11/08,22:25:28] PROPERTY RTL Language 0
[03/11/08,22:25:28] PROPERTY PostSetupCommandRegKey 
[03/11/08,22:25:28] PROPERTY GlobDataINIPresent 
[03/11/08,22:25:28] Checking Windows Installer version...
[03/11/08,22:25:28] msi.dll loaded ok
[03/11/08,22:25:28] Looking for: 2.0.0
[03/11/08,22:25:28] Found: 3.1.4000
[03/11/08,22:25:28] Windows Installer version ok
[03/11/08,22:25:28] Finished Checking Windows Installer version. Return code 0
[03/11/08,22:25:28] Entering CMsiInstaller::ThreadInit
[03/11/08,22:25:28] Leaving CMsiInstaller::ThreadInit
[03/11/08,22:25:28] Checking Windows Installer version...
[03/11/08,22:25:28] msi.dll loaded ok
[03/11/08,22:25:28] Looking for: 2.0.0
[03/11/08,22:25:28] Found: 3.1.4000
[03/11/08,22:25:28] Windows Installer version ok
[03/11/08,22:25:28] Finished Checking Windows Installer version. Return code 0
[03/11/08,22:25:28] Entering  CNavigator::Start
[03/11/08,22:25:28] Running all checks
[03/11/08,22:25:28] Running system checks
[03/11/08,22:25:28] Running prereq checks
[03/11/08,22:25:28] PREREQ CHECKS:  Passed
[03/11/08,22:25:28] Running block checks
[03/11/08,22:25:28] BETA CHECK:   Passed
[03/11/08,22:25:28] Entering CNavigator::WindowCreation
[03/11/08,22:25:28] Entering CNavigator::LoadPages
[03/11/08,22:25:28] Entering CMsiInstaller::IsInstalled
[03/11/08,22:25:28] Entering CMsiInstaller::GetProductCode
[03/11/08,22:25:28] Leaving CMsiInstaller::GetProductCode
[03/11/08,22:25:28] Leaving CMsiInstaller::IsInstalled
[03/11/08,22:25:28] Created Page: Progress Page
[03/11/08,22:25:28] Created Page: Final Page
[03/11/08,22:25:28] Leaving CNavigator::LoadPages
[03/11/08,22:25:28] Entering CMsiInstaller::RegisterUIInterfaces
[03/11/08,22:25:28] Leaving CMsiInstaller::RegisterUIInterfaces
[03/11/08,22:25:28] Entering CNavigator::Next
[03/11/08,22:25:28] Entering CMsiInstaller::StartInitialization
[03/11/08,22:25:28] Entering CMsiInstaller::InitSequence
[03/11/08,22:25:28] Leaving CMsiInstaller::StartInitialization
[03/11/08,22:25:29] ***ERROR EVENT*** : MsiOpenPackage(c:\temp\ext45874\Silverlight.msi, 1243872) returned 1612
[03/11/08,22:25:29] ***ERROR EVENT*** : Installation package c:\temp\ext45874\Silverlight.msi could not be opened. Verify that the package exists and that you can access it.
[03/11/08,22:25:29] Entering CNavigator::Next
[03/11/08,22:25:29] Leaving CMsiInstaller::InitSequence
[03/11/08,22:25:29] Leaving CNavigator::Next

I had the same problem.

I used this freeware:

http://www.revouninstaller.com/

Rid the registry of all remnants and I was able to reinstall

Sherlog,

 Thank you for your help but it didn't work. Silverlight can't be found on my pc anywhere. All that remains is the main issue to the problem. When I initially unistalled the program, an update that came with it can NOT be removed. Nothing matters. Even when I went into the registry to remove the update, the program still won't install. I unistalled IE 7 and reinstalled. The same issue remains.

Reinstalling Windows XP may be the only solution if someone doesn't find a way to rid the system of the update (and I won't do this if I'm going to lose things in the process). My pc runs fine so why mess with it for Silverlight?

 Thanks again.