Vista Tutorial - VS2008 SP1 install fails on virtual Vista

I tried twice to install VS2008's SP1 on my virtual Vista. Both times it
stopped at the same place. VS2008 was just installed last week. Any thoughts?
Logs show:

dd_dotnetfx35error.txt:

[05/28/09,23:46:07] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error:
Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI
returned error code 1058
[05/29/09,00:00:25] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error:
Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI
returned error code 1058

dd_dotnetfx35install.txt:

[05/29/09,00:00:28] Setup.exe: GetGlobalCustomProperty - Property:
{092114C2-997D-4D68-8F3A-8BC2584FD23B} - PropertyName: Quiet Mode Setup - Value:
1
[05/29/09,00:00:28] Setup.exe: ERROR (non critical): Suite Main
Directory:c:\Windows\Microsoft.NET\Framework\v3.5\Microsoft .NET Framework 3.5
SP1 does not exists. Log files will not be copied in the suite directory!
[05/29/09,00:00:28] Setup.exe: GetGlobalCustomProperty - Property:
{383F0141-C682-4665-A69B-756E719C968D} - PropertyName: Process Return Code -
Value: 1058
[05/29/09,00:00:28] Setup.exe: GetGlobalCustomProperty - Property:
{BBE1827C-F2FD-4FDA-A6D6-C83B62FFFDCA} - PropertyName: compfailed - Value: 1
[05/29/09,00:00:28] Setup.exe: AddGlobalCustomProperty
[05/29/09,00:00:28] Setup.exe: CSetupManager::RunInstall() - Launching Post
Setup Runs...
[05/29/09,00:00:28] Setup.exe: SetupManager::RunPostSetupLaunch() starting
[05/29/09,00:00:28] Setup.exe: SetupManager::RunPostSetupLaunch() ending
[05/29/09,00:00:28] Setup.exe: CSetupManager::RunInstall() - Finished launching
Post Setup Runs
[05/29/09,00:00:28] Setup.exe: Exiting RunInstall
[05/29/09,00:00:28] Setup.exe: UnloadSuiteComponents()
[05/29/09,00:00:28] UTILS::RunNGENAction: Started
[05/29/09,00:00:28] UTILS::RunNGENAction: starting
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe queue continue"
[05/29/09,00:00:28] UTILS::RunNGENAction: ngen.exe returned 0
[05/29/09,00:00:28] Setup.exe: GetGlobalCustomProperty - Property:
{8297A38B-6431-4F1D-9F6E-C3D371CEA383} - PropertyName: WebSetup - Value: 1
[05/29/09,00:00:28] Setup.exe: GetGlobalCustomProperty - Property:
{383F0141-C682-4665-A69B-756E719C968D} - PropertyName: Process Return Code -
Value: 1058
[05/29/09,00:00:28] Setup.exe: SETUP EXIT CODE - 1058
[05/29/09,00:00:28] End_Session:
--
- Vince

Vincent Fatica wrote:
Even if a reboot wasn't requested, have you restarted the virtual Vista
guest? Some installs add entries to the PendingFileRename key to
replace or delete files on Windows startup. Subsequent installs
sometimes check for this and refuse to do their install until the reboot
has completed.

Is the IIS server installed? If so, is it turned on? Some of the
ASP.net needs the server during the install.

Did you visit the Windows Update site to see if it finds any .Net stuff
that needs to be updated?