Cannot install SSIS or Notification services

I'm trying to reinstall SQL Server 2005 STD but I cannot get Setup to install Integration Services or Notification Services. I looked in the log and this is what I found. Needless to say, it makes no sense to me. It seems that Setup is trying to find a missing source list for a certain product. I have no clue what that product is. I've spent endless hours trying to figure it out and I'm still drawing a blank. This is a printout of the log.

Integration services -
-
MSI (s) (F0:B0) [02:33:01:437]: Machine policy value 'DisableUserInstalls' is 0
MSI (s) (F0:B0) [02:33:02:188]: End dialog not enabled
MSI (s) (F0:B0) [02:33:02:188]: Original package ==> G:\Servers\Setup\SqlRun_DTS.msi
MSI (s) (F0:B0) [02:33:02:188]: Package we're running from ==> C:\WINDOWS\Installer\188966.msi
MSI (s) (F0:B0) [02:33:02:339]: APPCOMPAT: looking for appcompat database entry with ProductCode '{EE8CFFD9-6E29-4DC3-A967-7348D5F41F44}'.
MSI (s) (F0:B0) [02:33:02:339]: APPCOMPAT: no matching ProductCode found in database.
MSI (s) (F0:B0) [02:33:02:339]: MSCOREE already loaded, using loaded copy
MSI (s) (F0:B0) [02:33:02:379]: Couldn't find local patch ''. Looking for it at its source.
MSI (s) (F0:B0) [02:33:02:379]: Resolving Patch source.
MSI (s) (F0:B0) [02:33:02:379]: User policy value 'SearchOrder' is 'nmu'
MSI (s) (F0:B0) [02:33:02:379]: User policy value 'DisableMedia' is 0
MSI (s) (F0:B0) [02:33:02:379]: Machine policy value 'AllowLockdownMedia' is 0
MSI (s) (F0:B0) [02:33:02:379]: SOURCEMGMT: Media enabled only if package is safe.
MSI (s) (F0:B0) [02:33:02:379]: SOURCEMGMT: Looking for sourcelist for product {8B7E2749-624E-4C61-92FC-2BC18307FF24}
MSI (s) (F0:B0) [02:33:02:379]: Note: 1: 1706 2: {8B7E2749-624E-4C61-92FC-2BC18307FF24} 3:
MSI (s) (F0:B0) [02:33:02:379]: SOURCEMGMT: Failed to resolve source
MSI (s) (F0:B0) [02:33:02:399]: Note: 1: 1708
MSI (s) (F0:B0) [02:33:02:399]: Note: 1: 2729
MSI (s) (F0:B0) [02:33:02:409]: Note: 1: 2729
MSI (s) (F0:B0) [02:33:02:409]: Product: Microsoft SQL Server 2005 Integration Services -- Installation failed.

MSI (s) (F0:B0) [02:33:02:439]: MainEngineThread is returning 1612
The installation source for this product is not available. Verify that the source exists and that you can access it.
G:\Servers\Setup\SqlRun_DTS.msi
MSI (c) (B8:88) [02:33:02:439]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
MSI (c) (B8:88) [02:33:02:439]: MainEngineThread is returning 1612
=== Verbose logging stopped: 5/19/2006 2:33:02 ===

--
Notification services -
--
MSI (s) (F0:30) [02:33:07:566]: Machine policy value 'DisableUserInstalls' is 0
MSI (s) (F0:30) [02:33:08:087]: End dialog not enabled
MSI (s) (F0:30) [02:33:08:087]: Original package ==> G:\Servers\Setup\SqlRun_NS.msi
MSI (s) (F0:30) [02:33:08:087]: Package we're running from ==> C:\WINDOWS\Installer\18898f.msi
MSI (s) (F0:30) [02:33:08:167]: APPCOMPAT: looking for appcompat database entry with ProductCode '{37E9AD9F-3217-4229-B5A5-7A0C82364C6C}'.
MSI (s) (F0:30) [02:33:08:167]: APPCOMPAT: no matching ProductCode found in database.
MSI (s) (F0:30) [02:33:08:167]: MSCOREE already loaded, using loaded copy
MSI (s) (F0:30) [02:33:08:187]: Couldn't find local patch ''. Looking for it at its source.
MSI (s) (F0:30) [02:33:08:187]: Resolving Patch source.
MSI (s) (F0:30) [02:33:08:187]: User policy value 'SearchOrder' is 'nmu'
MSI (s) (F0:30) [02:33:08:187]: User policy value 'DisableMedia' is 0
MSI (s) (F0:30) [02:33:08:187]: Machine policy value 'AllowLockdownMedia' is 0
MSI (s) (F0:30) [02:33:08:187]: SOURCEMGMT: Media enabled only if package is safe.
MSI (s) (F0:30) [02:33:08:187]: SOURCEMGMT: Looking for sourcelist for product {65A498A6-83B9-4B91-99EA-1BA88D73F0AA}
MSI (s) (F0:30) [02:33:08:187]: Note: 1: 1706 2: {65A498A6-83B9-4B91-99EA-1BA88D73F0AA} 3:
MSI (s) (F0:30) [02:33:08:187]: SOURCEMGMT: Failed to resolve source
MSI (s) (F0:30) [02:33:08:187]: Note: 1: 1708
MSI (s) (F0:30) [02:33:08:187]: Note: 1: 2729
MSI (s) (F0:30) [02:33:08:187]: Note: 1: 2729
MSI (s) (F0:30) [02:33:08:187]: Product: Microsoft SQL Server 2005 Notification Services -- Installation failed.

MSI (s) (F0:30) [02:33:08:197]: MainEngineThread is returning 1612
The installation source for this product is not available. Verify that the source exists and that you can access it.
G:\Servers\Setup\SqlRun_NS.msi
MSI (c) (B8:DC) [02:33:08:207]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
MSI (c) (B8:DC) [02:33:08:207]: MainEngineThread is returning 1612

During your first install, the MSIs were cached to the specified location (G:\servers\setup\...). Apparently those files were subsequently deleted or perhaps the drive is no longer accessible. Are you reinstalling from the original media or are you using add/remove programs?|||

Paul, I noticed these lines in the error log.

Integration services -
-
MSI (s) (F0:B0) [02:33:02:188]: Original package ==> G:\Servers\Setup\SqlRun_DTS.msi
MSI (s) (F0:B0) [02:33:02:188]: Package we're running from ==> C:\WINDOWS\Installer\188966.msi
--
Notification services -
--
MSI (s) (F0:30) [02:33:08:087]: Original package ==> G:\Servers\Setup\SqlRun_NS.msi
MSI (s) (F0:30) [02:33:08:087]: Package we're running from ==> C:\WINDOWS\Installer\18898f.msi

However, I can't find the C:\WINDOWS\Installer folder on my computer. Is this significant?

|||

The c:\windows\installer folder is ordinarily hidden. To see it, go to Windows Explorer tools\folder options and under the view tab turn on both "Display the contents of system folders" and "Show hidden files and folders". Once you've done that, the folder and its contents should be visible.

Paul